TY  - JOUR
AU  - Elhmali, Houda Taher
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Pešić, Ivan
AU  - Jovanović, Marija
AU  - Petrović, Miloš
AU  - Radojević, Vesna
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12718
AB  - While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.
T2  - Polymers
T1  - Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior
VL  - 16
IS  - 2
SP  - 278
DO  - 10.3390/polym16020278
ER  - 

@article{
author = "Elhmali, Houda Taher and Stajčić, Ivana and Stajčić, Aleksandar and Pešić, Ivan and Jovanović, Marija and Petrović, Miloš and Radojević, Vesna",
year = "2024",
abstract = "While dental poly methyl methacrylate(PMMA) possesses distinctive qualities such as ease of fabrication, cost-effectiveness, and favorable physical and mechanical properties, these attributes alone are inadequate to impart the necessary impact strength and hardness. Consequently, pure PMMA is less suitable for dental applications. This research focused on the incorporation of Strontium titanate (SrTiO3-STO) and hybrid filler STO/Manganese oxide (MnO2) to improve impact resistance and hardness. The potential of STO in reinforcing PMMA is poorly investigated, while hybrid filler STO/MnO2 has not been presented yet. Differential scanning calorimetry is conducted in order to investigate the agglomeration influence on the PMMA glass transition temperature (Tg), as well as the leaching of residual monomer and volatile additives that could pose a threat to human health. It has been determined that agglomeration with 1 wt% loading had no influence on Tg, while the first scan revealed differences in evaporation of small molecules, in favor of composite PMMA-STO/MnO2, which showed the trapping potential of volatiles. Investigations of mechanical properties have revealed the significant influence of hybrid STO/MnO2 filler on microhardness and total absorbed impact energy, which were increased by 89.9% and 145.4%, respectively. Results presented in this study revealed the reinforcing potential of hybrid nanoparticles that could find application in other polymers as well.",
journal = "Polymers",
title = "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior",
volume = "16",
number = "2",
pages = "278",
doi = "10.3390/polym16020278"
}

Elhmali, H. T., Stajčić, I., Stajčić, A., Pešić, I., Jovanović, M., Petrović, M.,& Radojević, V.. (2024). Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers, 16(2), 278.
https://doi.org/10.3390/polym16020278

Elhmali HT, Stajčić I, Stajčić A, Pešić I, Jovanović M, Petrović M, Radojević V. Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior. in Polymers. 2024;16(2):278.
doi:10.3390/polym16020278 .

Elhmali, Houda Taher, Stajčić, Ivana, Stajčić, Aleksandar, Pešić, Ivan, Jovanović, Marija, Petrović, Miloš, Radojević, Vesna, "Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior" in Polymers, 16, no. 2 (2024):278,
https://doi.org/10.3390/polym16020278 . .

TY  - JOUR
AU  - Salah Adeen Embirsh, Hifa
AU  - Stajčić, Ivana
AU  - Gržetić, Jelena
AU  - Mladenović, Ivana O.
AU  - Anđelković, Boban
AU  - Marinković, Aleksandar
AU  - Vuksanović, Marija M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11638
AB  - This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol(PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained fromrice husk. The structural and morphological properties of the obtained particles, b-UPR, as well ascomposites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magneticresonance spectroscopy (NMR), scanning electron microscopy (SEM), and transmission electronmicroscopy (TEM) techniques. The study of the influence of biosilica modification on the mechanicalproperties of composites was supported by hardness modeling. Improvement of the tensile strengthof the b-UPR-based composite at 2.5 wt.% addition of biosilica modified with vinyl silane, named“b-UPR/SiO2-V” composite, has been achieved with 88% increase. The thermal aging process appliedto the b-UPR/SiO2-V composite, which simulates use over the product’s lifetime, leads to the deterioration of composites that were used as fillers in commercial unsaturated polyester resin (c-UPR).The grinded artificially aged b-UPR composites were used as filler in c-UPR for the production of atable top layer with outstanding mechanical properties, i.e., impact resistance and microhardness, aswell as fire resistance rated in the V-0 category according to the UL-94 test. Developing sustainablecomposites that are chemically synthesized from renewable sources is important from the aspect ofpreserving the environment and existing resources as well as the extending their life cycle.
T2  - Polymers
T1  - Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles
VL  - 15
IS  - 18
SP  - 3756
DO  - 10.3390/polym15183756
ER  - 

@article{
author = "Salah Adeen Embirsh, Hifa and Stajčić, Ivana and Gržetić, Jelena and Mladenović, Ivana O. and Anđelković, Boban and Marinković, Aleksandar and Vuksanović, Marija M.",
year = "2023",
abstract = "This paper presents sustainable technology for environmentally friendly composite production. Biobased unsaturated polyester resin (b-UPR), synthesized from waste polyethylene terephthalate (PET) glycosylate and renewable origin maleic anhydride (MAnh) and propylene glycol(PG), was reinforced with unmodified and vinyl-modified biosilica nanoparticles obtained fromrice husk. The structural and morphological properties of the obtained particles, b-UPR, as well ascomposites, were characterized by Fourier-transform infrared spectroscopy (FTIR), nuclear magneticresonance spectroscopy (NMR), scanning electron microscopy (SEM), and transmission electronmicroscopy (TEM) techniques. The study of the influence of biosilica modification on the mechanicalproperties of composites was supported by hardness modeling. Improvement of the tensile strengthof the b-UPR-based composite at 2.5 wt.% addition of biosilica modified with vinyl silane, named“b-UPR/SiO2-V” composite, has been achieved with 88% increase. The thermal aging process appliedto the b-UPR/SiO2-V composite, which simulates use over the product’s lifetime, leads to the deterioration of composites that were used as fillers in commercial unsaturated polyester resin (c-UPR).The grinded artificially aged b-UPR composites were used as filler in c-UPR for the production of atable top layer with outstanding mechanical properties, i.e., impact resistance and microhardness, aswell as fire resistance rated in the V-0 category according to the UL-94 test. Developing sustainablecomposites that are chemically synthesized from renewable sources is important from the aspect ofpreserving the environment and existing resources as well as the extending their life cycle.",
journal = "Polymers",
title = "Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles",
volume = "15",
number = "18",
pages = "3756",
doi = "10.3390/polym15183756"
}

Salah Adeen Embirsh, H., Stajčić, I., Gržetić, J., Mladenović, I. O., Anđelković, B., Marinković, A.,& Vuksanović, M. M.. (2023). Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles. in Polymers, 15(18), 3756.
https://doi.org/10.3390/polym15183756

Salah Adeen Embirsh H, Stajčić I, Gržetić J, Mladenović IO, Anđelković B, Marinković A, Vuksanović MM. Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles. in Polymers. 2023;15(18):3756.
doi:10.3390/polym15183756 .

Salah Adeen Embirsh, Hifa, Stajčić, Ivana, Gržetić, Jelena, Mladenović, Ivana O., Anđelković, Boban, Marinković, Aleksandar, Vuksanović, Marija M., "Synthesis, Characterization and Application of Biobased Unsaturated Polyester Resin Reinforced with Unmodified/Modified Biosilica Nanoparticles" in Polymers, 15, no. 18 (2023):3756,
https://doi.org/10.3390/polym15183756 . .

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Stajčić, Ivana
AU  - Stoiljković, Milovan
AU  - Janković, Marija
AU  - Kapuran, Đorđe
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12570
AB  - Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana.
AB  - Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.
PB  - Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika
T1  - Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system
SP  - 115
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12570
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Stajčić, Ivana and Stoiljković, Milovan and Janković, Marija and Kapuran, Đorđe and Veličković, Suzana",
year = "2023",
abstract = "Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana., Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.",
publisher = "Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika, Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system",
pages = "115-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12570"
}

Veljković, F., Janković, B., Stajčić, I., Stoiljković, M., Janković, M., Kapuran, Đ.,& Veličković, S.. (2023). Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije., 115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570

Veljković F, Janković B, Stajčić I, Stoiljković M, Janković M, Kapuran Đ, Veličković S. Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

Veljković, Filip, Janković, Bojan, Stajčić, Ivana, Stoiljković, Milovan, Janković, Marija, Kapuran, Đorđe, Veličković, Suzana, "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):115-118,
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

TY  - CHAP
AU  - Stajčić, Aleksandar
AU  - Radović, Ivana M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10591
AB  - Among many possible fields of application, membrane technology is very valuable for biological and medical purposes. As a young field with high potential for further expansion, it is of great interest for researches. This chapter presents preparation and characterization of magnetic nanocomposite membranes. Ethylcellulose-strontium ferrite (EC-SrFe12O19) nanocomposites were prepared via solvent casting method with applied low magnetic field. In order to identify morphological and topological changes induced by membrane processing, scanning electron microscopy (FESEM) and atomic force microscopy (AFM) were performed. Orientation of nanoparticles and formation of two-phase structure caused by the influence of magnetic field were observed. Infrared spectroscopy with Fourier transformation (FTIR) was used to prove the stability of starting components during processing of nanocomposite membrane. Nanoparticles’ high reinforcing potential was proved by micro Vickers method and tensile test. Modulus of elasticity in EC-SrFe12O19 samples has increased up to 135%, compared to pure EC. The permeability of magnetic nanocomposite membranes was tested by monitoring the output pressure change of the nitrogen/oxygen mixtures, as well as pure nitrogen, using custom-made laboratory device. This technique also enabled investigation of membranes’ mechanical performance by following changes in permeability with the pressure for each sample. Orientation of magnetic SrFe12O19 nanoparticles led to a formation of highly reinforced membranes that have potential application in membrane technology.
T2  - Bioceramics, Biomimetic and Other Compatible Materials Features for Medical Applications
T1  - Structural and Morphological Characterization of Strontium Ferrite-Ethylcellulose Nanocomposite for Application in Membrane Technology
SP  - 231
EP  - 251
DO  - 10.1007/978-3-031-17269-4_12
ER  - 

@inbook{
author = "Stajčić, Aleksandar and Radović, Ivana M.",
year = "2023",
abstract = "Among many possible fields of application, membrane technology is very valuable for biological and medical purposes. As a young field with high potential for further expansion, it is of great interest for researches. This chapter presents preparation and characterization of magnetic nanocomposite membranes. Ethylcellulose-strontium ferrite (EC-SrFe12O19) nanocomposites were prepared via solvent casting method with applied low magnetic field. In order to identify morphological and topological changes induced by membrane processing, scanning electron microscopy (FESEM) and atomic force microscopy (AFM) were performed. Orientation of nanoparticles and formation of two-phase structure caused by the influence of magnetic field were observed. Infrared spectroscopy with Fourier transformation (FTIR) was used to prove the stability of starting components during processing of nanocomposite membrane. Nanoparticles’ high reinforcing potential was proved by micro Vickers method and tensile test. Modulus of elasticity in EC-SrFe12O19 samples has increased up to 135%, compared to pure EC. The permeability of magnetic nanocomposite membranes was tested by monitoring the output pressure change of the nitrogen/oxygen mixtures, as well as pure nitrogen, using custom-made laboratory device. This technique also enabled investigation of membranes’ mechanical performance by following changes in permeability with the pressure for each sample. Orientation of magnetic SrFe12O19 nanoparticles led to a formation of highly reinforced membranes that have potential application in membrane technology.",
journal = "Bioceramics, Biomimetic and Other Compatible Materials Features for Medical Applications",
booktitle = "Structural and Morphological Characterization of Strontium Ferrite-Ethylcellulose Nanocomposite for Application in Membrane Technology",
pages = "231-251",
doi = "10.1007/978-3-031-17269-4_12"
}

Stajčić, A.,& Radović, I. M.. (2023). Structural and Morphological Characterization of Strontium Ferrite-Ethylcellulose Nanocomposite for Application in Membrane Technology. in Bioceramics, Biomimetic and Other Compatible Materials Features for Medical Applications, 231-251.
https://doi.org/10.1007/978-3-031-17269-4_12

Stajčić A, Radović IM. Structural and Morphological Characterization of Strontium Ferrite-Ethylcellulose Nanocomposite for Application in Membrane Technology. in Bioceramics, Biomimetic and Other Compatible Materials Features for Medical Applications. 2023;:231-251.
doi:10.1007/978-3-031-17269-4_12 .

Stajčić, Aleksandar, Radović, Ivana M., "Structural and Morphological Characterization of Strontium Ferrite-Ethylcellulose Nanocomposite for Application in Membrane Technology" in Bioceramics, Biomimetic and Other Compatible Materials Features for Medical Applications (2023):231-251,
https://doi.org/10.1007/978-3-031-17269-4_12 . .

TY  - CONF
AU  - Stajčić, A.
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Janković, Marija
AU  - Janković, Bojan
AU  - Pijović, Milena
AU  - Stajčić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12598
AB  - Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.
PB  - Belgrade : Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
T1  - Structural characterization of bio-modified epoxy resin by using MALDI-TOF
SP  - 99
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12598
ER  - 

@conference{
author = "Stajčić, A. and Veljković, Filip and Veličković, Suzana and Janković, Marija and Janković, Bojan and Pijović, Milena and Stajčić, Ivana",
year = "2023",
abstract = "Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection : Book of Abstracts",
title = "Structural characterization of bio-modified epoxy resin by using MALDI-TOF",
pages = "99-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12598"
}

Stajčić, A., Veljković, F., Veličković, S., Janković, M., Janković, B., Pijović, M.,& Stajčić, I.. (2023). Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
Belgrade : Serbian Chemical Society., 99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598

Stajčić A, Veljković F, Veličković S, Janković M, Janković B, Pijović M, Stajčić I. Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts. 2023;:99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

Stajčić, A., Veljković, Filip, Veličković, Suzana, Janković, Marija, Janković, Bojan, Pijović, Milena, Stajčić, Ivana, "Structural characterization of bio-modified epoxy resin by using MALDI-TOF" in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts (2023):99-99,
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

TY  - JOUR
AU  - Stajčić, Ivana
AU  - Veljković, Filip
AU  - Petrović, Miloš
AU  - Veličković, Suzana
AU  - Radojević, Vesna
AU  - Vlahović, Branislav
AU  - Stajčić, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11093
AB  - High performance polymers with bio-based modifiers are promising materials in terms of applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation of highly stable structures that were observed in scanning electron microscopy images as separate phases at the fracture surface, which were involved in the toughening of the resin. Structural changes were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis confirmed the formation of products that were stable up to 600 °C, with a glass transition temperature of 228 °C. An energy-controlled impact test was performed to compare the absorbed impact energy of bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin. In this manner, by using simple preparation and a raw material that is abundant in nature, a novel epoxy with high thermal and impact resistance was obtained, opening a path for further research in this field.
T2  - Polymers
T1  - Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey
VL  - 15
IS  - 10
SP  - 2261
DO  - 10.3390/polym15102261
ER  - 

@article{
author = "Stajčić, Ivana and Veljković, Filip and Petrović, Miloš and Veličković, Suzana and Radojević, Vesna and Vlahović, Branislav and Stajčić, Aleksandar",
year = "2023",
abstract = "High performance polymers with bio-based modifiers are promising materials in terms of applications and environmental impact. In this work, raw acacia honey was used as a bio-modifier for epoxy resin, as a rich source of functional groups. The addition of honey resulted in the formation of highly stable structures that were observed in scanning electron microscopy images as separate phases at the fracture surface, which were involved in the toughening of the resin. Structural changes were investigated, revealing the formation of a new aldehyde carbonyl group. Thermal analysis confirmed the formation of products that were stable up to 600 °C, with a glass transition temperature of 228 °C. An energy-controlled impact test was performed to compare the absorbed impact energy of bio-modified epoxy containing different amounts of honey with unmodified epoxy resin. The results showed that bio-modified epoxy resin with 3 wt% of acacia honey could withstand several impacts with full recovery, while unmodified epoxy resin broke at first impact. The absorbed energy at first impact was 2.5 times higher for bio-modified epoxy resin than it was for unmodified epoxy resin. In this manner, by using simple preparation and a raw material that is abundant in nature, a novel epoxy with high thermal and impact resistance was obtained, opening a path for further research in this field.",
journal = "Polymers",
title = "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey",
volume = "15",
number = "10",
pages = "2261",
doi = "10.3390/polym15102261"
}

Stajčić, I., Veljković, F., Petrović, M., Veličković, S., Radojević, V., Vlahović, B.,& Stajčić, A.. (2023). Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers, 15(10), 2261.
https://doi.org/10.3390/polym15102261

Stajčić I, Veljković F, Petrović M, Veličković S, Radojević V, Vlahović B, Stajčić A. Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey. in Polymers. 2023;15(10):2261.
doi:10.3390/polym15102261 .

Stajčić, Ivana, Veljković, Filip, Petrović, Miloš, Veličković, Suzana, Radojević, Vesna, Vlahović, Branislav, Stajčić, Aleksandar, "Impact- and Thermal-Resistant Epoxy Resin Toughened with Acacia Honey" in Polymers, 15, no. 10 (2023):2261,
https://doi.org/10.3390/polym15102261 . .

TY  - CONF
AU  - Janković, Marija
AU  - Veljković, Filip
AU  - Sarap, Nataša
AU  - Veličković, Suzana
AU  - Stajčić, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12354
AB  - This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Analysis of commercial supplements using a nuclear and MALDI-MS techniques
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12354
ER  - 

@conference{
author = "Janković, Marija and Veljković, Filip and Sarap, Nataša and Veličković, Suzana and Stajčić, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Analysis of commercial supplements using a nuclear and MALDI-MS techniques",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12354"
}

Janković, M., Veljković, F., Sarap, N., Veličković, S., Stajčić, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12354

Janković M, Veljković F, Sarap N, Veličković S, Stajčić I, Šljivić-Ivanović M, Janković B. Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

Janković, Marija, Veljković, Filip, Sarap, Nataša, Veličković, Suzana, Stajčić, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Analysis of commercial supplements using a nuclear and MALDI-MS techniques" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

TY  - CONF
AU  - Veljković, Filip
AU  - Drakulić, Dunja
AU  - Todorović, Ana
AU  - Pejić, Snežana
AU  - Bobić, Katarina
AU  - Stajčić, Ivana
AU  - Pajović, Snežana
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12663
AB  - It is known that the “superalkali” cluster Li2F can significantly improve the hydrogen storage capabilities in carbon materials; boron compounds play a similar role. However, the possibility of interactions of lithium fluoride clusters with boron and hydrogen has not been investigated so far. In this work, a laser desorption/ionization mass spectrometry (LDI MS) was used for this purpose. Preliminary results showed that the interaction between the “superalkali” Li3F cluster, boron and six hydrogen atoms is possible; the ion Li3FBH6+ was detected. Non-stoichiometric clusters of lithium fluoride can also combine with boron and hydrogen in the following manner: Li5F2BH5+ Li5F3BH2+ Li4F5BH4+ Li6F2B6H+, and Li8F6H+.
PB  - Kragujevac : Institute for Information Technologies, University of Kragujevac
C3  - ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
T1  - Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS
SP  - 176
EP  - 179
DO  - 10.46793/ICCBI23.176V
ER  - 

@conference{
author = "Veljković, Filip and Drakulić, Dunja and Todorović, Ana and Pejić, Snežana and Bobić, Katarina and Stajčić, Ivana and Pajović, Snežana and Veličković, Suzana",
year = "2023",
abstract = "It is known that the “superalkali” cluster Li2F can significantly improve the hydrogen storage capabilities in carbon materials; boron compounds play a similar role. However, the possibility of interactions of lithium fluoride clusters with boron and hydrogen has not been investigated so far. In this work, a laser desorption/ionization mass spectrometry (LDI MS) was used for this purpose. Preliminary results showed that the interaction between the “superalkali” Li3F cluster, boron and six hydrogen atoms is possible; the ion Li3FBH6+ was detected. Non-stoichiometric clusters of lithium fluoride can also combine with boron and hydrogen in the following manner: Li5F2BH5+ Li5F3BH2+ Li4F5BH4+ Li6F2B6H+, and Li8F6H+.",
publisher = "Kragujevac : Institute for Information Technologies, University of Kragujevac",
journal = "ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings",
title = "Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS",
pages = "176-179",
doi = "10.46793/ICCBI23.176V"
}

Veljković, F., Drakulić, D., Todorović, A., Pejić, S., Bobić, K., Stajčić, I., Pajović, S.,& Veličković, S.. (2023). Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings
Kragujevac : Institute for Information Technologies, University of Kragujevac., 176-179.
https://doi.org/10.46793/ICCBI23.176V

Veljković F, Drakulić D, Todorović A, Pejić S, Bobić K, Stajčić I, Pajović S, Veličković S. Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS. in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings. 2023;:176-179.
doi:10.46793/ICCBI23.176V .

Veljković, Filip, Drakulić, Dunja, Todorović, Ana, Pejić, Snežana, Bobić, Katarina, Stajčić, Ivana, Pajović, Snežana, Veličković, Suzana, "Investigation of the possibility of interaction between lithium fluoride clusters and boron using LDI MS" in ICCBIKG 2023 : 2nd International Conference on Chemo and Bioinformatics : Book of Proceedings (2023):176-179,
https://doi.org/10.46793/ICCBI23.176V . .

TY  - CONF
AU  - Veljković, Filip
AU  - Matović, Branko
AU  - Butulija, Svetlana
AU  - Stoiljković, Milovan
AU  - Stajčić, Ivana
AU  - Janković, Bojan
AU  - Veličković, Suzana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12622
AB  - In the last couple of decades the scientific is making great efforts to investigate the phenomenon of laser-matter interaction, because these knowledge can directly positively influence on technological innovations in the field of materials. This phenomenon are still not fully invetigate since involves a number physical and chemical processes, which take place simultaneously or separated in time and space [1]. The laser desorption/ionization (LDI) implies the following processes: the laser provide a pulse of energy to sample (for a few ns), the sample increases in temperature quickly ( to several thousand degrees), so lead to the production ions, neutrals and electrons in the gass phase [2]. The aim of this paper is to examine the products of the gas phase formed during the interaction of laser- Li1.999Ta0.005SiO3. The Li1.999Ta0.005SiO3 ceramics has a wide application because the melting of lithium metasilicate is used for the calibration of thermocouples, as a flux in glazes and ceramic enamels, dental glass, nuclear waste immobilization as well as ceramic materials for fusion reactors. The knowledge gained should contribute to a better understanding behavior of Li1.999Ta0.005SiO3 in extreme conditions. The experiments were performed on a commercial matrix-assisted laser desorption/ionization mass spectrometer (MALDI MS) with time of flight mass analyzer (Voyager-DE PRO, Sciex, USA), equipped with a nitrogen pulse laser (pulse duration of 3 ns, 20 Hz, and wavelength of 337 nm). The mass spectra were obtained using the LDI (without matrices) positive and negative reflector modes. It is known that the LDI MS is an efficient method for the production and detection of homogeneous and heterogeneous clusters [3]. Preliminary results shows that the ion signals in the negative ion LDI mass spectrum of Li1.999Ta0.005SiO3 correspond to the following species: m/z 59.89 SiO2 -  (calcd 59.97), m/z 71.90 Si2O-  (calcd 71.95), m/z 83.90 Si3 -  (calcd 83.93), m/z 95.91 Si(OH)4 - (calcd 95.99), m/z107.91 Si2(OH)2(H2O)-  (calcd 107.97), m/z 119.92 Si2O4 -  (calcd 119.93), m/z 120.95 Si2O3(OH)-  (calcd 120.94), m/z 131.93 Si3O3 -  (calcd 131.92), m/z 143.92 Si2(OH)2(H2O)3 - (calcd 143.99). The ion signals in the positive mode were attributed to the following cations: LiSi(OH)+  (m/z 52.02, calcd 51.99), Li3(OH)(H2O)+ (m/z 56.04, calcd 56.06), Li2SiO+ (m/z 58.05 calcd 58.00), Li3Si2H2(H2O)+ (m/z 97.15 calcd 97.03), Li5Si2H2O+ (m/z 109.10, calcd 109.04). The results show that silicon-oxygen cluster ions were formed in the negative mode, while lithiumsilicon clusters were detected in the positive mode.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3
SP  - 46
EP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12622
ER  - 

@conference{
author = "Veljković, Filip and Matović, Branko and Butulija, Svetlana and Stoiljković, Milovan and Stajčić, Ivana and Janković, Bojan and Veličković, Suzana",
year = "2022",
abstract = "In the last couple of decades the scientific is making great efforts to investigate the phenomenon of laser-matter interaction, because these knowledge can directly positively influence on technological innovations in the field of materials. This phenomenon are still not fully invetigate since involves a number physical and chemical processes, which take place simultaneously or separated in time and space [1]. The laser desorption/ionization (LDI) implies the following processes: the laser provide a pulse of energy to sample (for a few ns), the sample increases in temperature quickly ( to several thousand degrees), so lead to the production ions, neutrals and electrons in the gass phase [2]. The aim of this paper is to examine the products of the gas phase formed during the interaction of laser- Li1.999Ta0.005SiO3. The Li1.999Ta0.005SiO3 ceramics has a wide application because the melting of lithium metasilicate is used for the calibration of thermocouples, as a flux in glazes and ceramic enamels, dental glass, nuclear waste immobilization as well as ceramic materials for fusion reactors. The knowledge gained should contribute to a better understanding behavior of Li1.999Ta0.005SiO3 in extreme conditions. The experiments were performed on a commercial matrix-assisted laser desorption/ionization mass spectrometer (MALDI MS) with time of flight mass analyzer (Voyager-DE PRO, Sciex, USA), equipped with a nitrogen pulse laser (pulse duration of 3 ns, 20 Hz, and wavelength of 337 nm). The mass spectra were obtained using the LDI (without matrices) positive and negative reflector modes. It is known that the LDI MS is an efficient method for the production and detection of homogeneous and heterogeneous clusters [3]. Preliminary results shows that the ion signals in the negative ion LDI mass spectrum of Li1.999Ta0.005SiO3 correspond to the following species: m/z 59.89 SiO2 -  (calcd 59.97), m/z 71.90 Si2O-  (calcd 71.95), m/z 83.90 Si3 -  (calcd 83.93), m/z 95.91 Si(OH)4 - (calcd 95.99), m/z107.91 Si2(OH)2(H2O)-  (calcd 107.97), m/z 119.92 Si2O4 -  (calcd 119.93), m/z 120.95 Si2O3(OH)-  (calcd 120.94), m/z 131.93 Si3O3 -  (calcd 131.92), m/z 143.92 Si2(OH)2(H2O)3 - (calcd 143.99). The ion signals in the positive mode were attributed to the following cations: LiSi(OH)+  (m/z 52.02, calcd 51.99), Li3(OH)(H2O)+ (m/z 56.04, calcd 56.06), Li2SiO+ (m/z 58.05 calcd 58.00), Li3Si2H2(H2O)+ (m/z 97.15 calcd 97.03), Li5Si2H2O+ (m/z 109.10, calcd 109.04). The results show that silicon-oxygen cluster ions were formed in the negative mode, while lithiumsilicon clusters were detected in the positive mode.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3",
pages = "46-46",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12622"
}

Veljković, F., Matović, B., Butulija, S., Stoiljković, M., Stajčić, I., Janković, B.,& Veličković, S.. (2022). Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 46-46.
https://hdl.handle.net/21.15107/rcub_vinar_12622

Veljković F, Matović B, Butulija S, Stoiljković M, Stajčić I, Janković B, Veličković S. Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:46-46.
https://hdl.handle.net/21.15107/rcub_vinar_12622 .

Veljković, Filip, Matović, Branko, Butulija, Svetlana, Stoiljković, Milovan, Stajčić, Ivana, Janković, Bojan, Veličković, Suzana, "Laser desorption/ionization mass spectrometry of Li1.999Ta0.005SiO3" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):46-46,
https://hdl.handle.net/21.15107/rcub_vinar_12622 .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Kareem Ali Alzaroug, Azdihar
AU  - Kalevski, Katarina
AU  - Vuksanović, Marija M.
AU  - Volkov-Husović, Tatjana
AU  - Radović, Ivana M.
AU  - Radojević, Vesna
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10053
AB  - Polymer matrix composite materials have found application in dentistry because of good mechanical properties, aesthetic, easy processing, and possibilities of the repair. Acrylates are materials used to make and repair dentures. Reinforcements in the form of short glass or polymer fibers are added to improve the mechanical properties of dental polymers. In this study, the processing of composite material with a polymer matrix from commercial auto-polymerized acrylate Simgal, with reinforcement in the form of short poly(ethylene terephthalate) (PET) fibers was examined. Samples were processed in three series: pure Simgal, Simgal/PET 1 wt% and Simgal/PET 3 wt%. The influence of the reinforcement in the form of short PET fibers on the mechanical properties of composite materials was investigated. Strength and hardness were tested by impact testing and Vickers microhardness, and it was shown that there is an increase in absorbed energy and hardness. The modulus was reduced by the addition of PET fibers and by increasing the amount of fibers in the composite. The increase in the amount of PET fibers also resulted in a smaller loss of surface mass of the samples compared to the pure matrix by 63% and 93%, respectively. Cavitation test revealed better cavitation resistance of composites than the pure acrylate.
T2  - Polymer Composites
T1  - Denture composite reinforced with short polyethylene terephthalate fibers
IS  - 1
SP  - 543
EP  - 550
DO  - 10.1002/pc.26397
ER  - 

@article{
author = "Perišić, Srđan and Kareem Ali Alzaroug, Azdihar and Kalevski, Katarina and Vuksanović, Marija M. and Volkov-Husović, Tatjana and Radović, Ivana M. and Radojević, Vesna",
year = "2022",
abstract = "Polymer matrix composite materials have found application in dentistry because of good mechanical properties, aesthetic, easy processing, and possibilities of the repair. Acrylates are materials used to make and repair dentures. Reinforcements in the form of short glass or polymer fibers are added to improve the mechanical properties of dental polymers. In this study, the processing of composite material with a polymer matrix from commercial auto-polymerized acrylate Simgal, with reinforcement in the form of short poly(ethylene terephthalate) (PET) fibers was examined. Samples were processed in three series: pure Simgal, Simgal/PET 1 wt% and Simgal/PET 3 wt%. The influence of the reinforcement in the form of short PET fibers on the mechanical properties of composite materials was investigated. Strength and hardness were tested by impact testing and Vickers microhardness, and it was shown that there is an increase in absorbed energy and hardness. The modulus was reduced by the addition of PET fibers and by increasing the amount of fibers in the composite. The increase in the amount of PET fibers also resulted in a smaller loss of surface mass of the samples compared to the pure matrix by 63% and 93%, respectively. Cavitation test revealed better cavitation resistance of composites than the pure acrylate.",
journal = "Polymer Composites",
title = "Denture composite reinforced with short polyethylene terephthalate fibers",
number = "1",
pages = "543-550",
doi = "10.1002/pc.26397"
}

Perišić, S., Kareem Ali Alzaroug, A., Kalevski, K., Vuksanović, M. M., Volkov-Husović, T., Radović, I. M.,& Radojević, V.. (2022). Denture composite reinforced with short polyethylene terephthalate fibers. in Polymer Composites(1), 543-550.
https://doi.org/10.1002/pc.26397

Perišić S, Kareem Ali Alzaroug A, Kalevski K, Vuksanović MM, Volkov-Husović T, Radović IM, Radojević V. Denture composite reinforced with short polyethylene terephthalate fibers. in Polymer Composites. 2022;(1):543-550.
doi:10.1002/pc.26397 .

Perišić, Srđan, Kareem Ali Alzaroug, Azdihar, Kalevski, Katarina, Vuksanović, Marija M., Volkov-Husović, Tatjana, Radović, Ivana M., Radojević, Vesna, "Denture composite reinforced with short polyethylene terephthalate fibers" in Polymer Composites, no. 1 (2022):543-550,
https://doi.org/10.1002/pc.26397 . .

TY  - JOUR
AU  - Vuksanović, Marija M.
AU  - Jovanović, Aleksandar A.
AU  - Milošević, Milena D.
AU  - Gržetić, Jelena D.
AU  - Stajčić, Ivana
AU  - Jančić-Heinemann, Radmila
AU  - Marinković, Aleksandar D.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10460
AB  - Predmet ovog istraživanja je sinteza glikolizata iz recikliranog poli(etilen tereftalata) (PET) postupcima depolimerizacije pomoću dietilenglikoala (DEG) u prisustvu katalizatora FASCAT 4100. Dobijeni glikolizat je zatim tretiran anhidridom maleinske kiseline i na kraju 2-oktanolom (2-EtHex pri čemu se dobija 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plastifikator. Karakterizacija dobijenog plastifikatora izvršena je infracrvenom spektroskopijom sa Furijeovom transformacijom (FTIR) i NRM spektroskopijom. Dobijeni plastifikatori (10 tež. %) su umešani u bitumen a zatim su izvršena ispitivanja mehaničkih svojstava dobijenih proizvoda.
AB  - The subject of this study is the synthesis of glycolysates from recycled poly (ethylene terephthalate) (PET) by depolymerization using diethylene glycol (DEG) in the presence of catalyst FASCAT 4100. The resulting glycolysate was then treated with maleic anhydride and finally with 2-octanol to obtain a 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plasticizer. The characterization of the obtained plasticizer was performed by infrared spectroscopy with Fourier transform (FTIR) and NMR spectroscopy. The obtained plasticizers were mixed into bitumen with 10 wt. % and tests of mechanical properties of obtained products were performed.
T2  - Tehnika - Novi materijali
T1  - Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a
VL  - 77
IS  - 4
SP  - 413
EP  - 417
DO  - 10.5937/tehnika2204413V
ER  - 

@article{
author = "Vuksanović, Marija M. and Jovanović, Aleksandar A. and Milošević, Milena D. and Gržetić, Jelena D. and Stajčić, Ivana and Jančić-Heinemann, Radmila and Marinković, Aleksandar D.",
year = "2022",
abstract = "Predmet ovog istraživanja je sinteza glikolizata iz recikliranog poli(etilen tereftalata) (PET) postupcima depolimerizacije pomoću dietilenglikoala (DEG) u prisustvu katalizatora FASCAT 4100. Dobijeni glikolizat je zatim tretiran anhidridom maleinske kiseline i na kraju 2-oktanolom (2-EtHex pri čemu se dobija 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plastifikator. Karakterizacija dobijenog plastifikatora izvršena je infracrvenom spektroskopijom sa Furijeovom transformacijom (FTIR) i NRM spektroskopijom. Dobijeni plastifikatori (10 tež. %) su umešani u bitumen a zatim su izvršena ispitivanja mehaničkih svojstava dobijenih proizvoda., The subject of this study is the synthesis of glycolysates from recycled poly (ethylene terephthalate) (PET) by depolymerization using diethylene glycol (DEG) in the presence of catalyst FASCAT 4100. The resulting glycolysate was then treated with maleic anhydride and finally with 2-octanol to obtain a 2-EtHex/MA/DEG/PET/EG/MA/2-EtHex plasticizer. The characterization of the obtained plasticizer was performed by infrared spectroscopy with Fourier transform (FTIR) and NMR spectroscopy. The obtained plasticizers were mixed into bitumen with 10 wt. % and tests of mechanical properties of obtained products were performed.",
journal = "Tehnika - Novi materijali",
title = "Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a",
volume = "77",
number = "4",
pages = "413-417",
doi = "10.5937/tehnika2204413V"
}

Vuksanović, M. M., Jovanović, A. A., Milošević, M. D., Gržetić, J. D., Stajčić, I., Jančić-Heinemann, R.,& Marinković, A. D.. (2022). Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a. in Tehnika - Novi materijali, 77(4), 413-417.
https://doi.org/10.5937/tehnika2204413V

Vuksanović MM, Jovanović AA, Milošević MD, Gržetić JD, Stajčić I, Jančić-Heinemann R, Marinković AD. Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a. in Tehnika - Novi materijali. 2022;77(4):413-417.
doi:10.5937/tehnika2204413V .

Vuksanović, Marija M., Jovanović, Aleksandar A., Milošević, Milena D., Gržetić, Jelena D., Stajčić, Ivana, Jančić-Heinemann, Radmila, Marinković, Aleksandar D., "Ispitivanje mehaničkih svojstava bitumenskih proizvoda dobijenih korišćenjem plastifikatora na bazi polietilen tereftalat-a" in Tehnika - Novi materijali, 77, no. 4 (2022):413-417,
https://doi.org/10.5937/tehnika2204413V . .

TY  - CONF
AU  - Vuksanović, Marija M.
AU  - Stajčić, Ivana
AU  - Veličković, Z.
AU  - Gržetić, J. D.
AU  - Veljković, Filip M.
AU  - Veličković, Suzana
AU  - Marinković, A.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10675
AB  - Recycling of polymer materials is a promising way of plastic waste reduction and production of compounds that reduce oil-based materials dependence. This paper represents synthesis of waste PET-based plasticizer obtained by esterification of PET depolymerization products (glycolisate) and levulinic (bio-renewable chemical). Depolymerization of the waste PET was performed using diethylene glycol. Morphological and structural analyses confirmed successful depolymerization of waste-PET, as well as esterification of the obtained product with levulinic acid. Good chemical resistance and mechanical properties, e.g. elongation at break of 65% and tensile strength of 50 MPa, of recycled PVC modified with synthesized waste-PET based plasticizer proved that depolymerization and modification of waste-PET represent one efficient solution for plastic waste recycling.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production
SP  - 359
EP  - 362
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10675
ER  - 

@conference{
author = "Vuksanović, Marija M. and Stajčić, Ivana and Veličković, Z. and Gržetić, J. D. and Veljković, Filip M. and Veličković, Suzana and Marinković, A.",
year = "2022",
abstract = "Recycling of polymer materials is a promising way of plastic waste reduction and production of compounds that reduce oil-based materials dependence. This paper represents synthesis of waste PET-based plasticizer obtained by esterification of PET depolymerization products (glycolisate) and levulinic (bio-renewable chemical). Depolymerization of the waste PET was performed using diethylene glycol. Morphological and structural analyses confirmed successful depolymerization of waste-PET, as well as esterification of the obtained product with levulinic acid. Good chemical resistance and mechanical properties, e.g. elongation at break of 65% and tensile strength of 50 MPa, of recycled PVC modified with synthesized waste-PET based plasticizer proved that depolymerization and modification of waste-PET represent one efficient solution for plastic waste recycling.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production",
pages = "359-362",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10675"
}

Vuksanović, M. M., Stajčić, I., Veličković, Z., Gržetić, J. D., Veljković, F. M., Veličković, S.,& Marinković, A.. (2022). Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia., 359-362.
https://hdl.handle.net/21.15107/rcub_vinar_10675

Vuksanović MM, Stajčić I, Veličković Z, Gržetić JD, Veljković FM, Veličković S, Marinković A. Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;:359-362.
https://hdl.handle.net/21.15107/rcub_vinar_10675 .

Vuksanović, Marija M., Stajčić, Ivana, Veličković, Z., Gržetić, J. D., Veljković, Filip M., Veličković, Suzana, Marinković, A., "Synthesis and Application of Waste-Pet Glycolyzate Plastisizer for Recycled PVC Production" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings (2022):359-362,
https://hdl.handle.net/21.15107/rcub_vinar_10675 .

TY  - JOUR
AU  - Stajčić, Aleksandar
AU  - Stajčić, Ivana
AU  - Mitić, Vojislav V.
AU  - Lu, Chun-An
AU  - Vlahović, Branislav
AU  - Vasiljević-Radović, Dana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10394
AB  - BaTiO3 (BTO) is considered the most commonly used ceramic material in multilayer ceramic capacitors due to its desirable dielectric properties. Considering that the miniaturization of electronic devices represents an expanding field of research, modification of BTO has been performed to increase dielectric constant and DC bias characteristic/sensitivity. This research presents the effect of N2 and air atmospheres on morphological and dielectric properties of BTO nanoparticles modified with organometallic salt at sintering temperatures of 1200∘1200∘C, 1250∘1250∘C, 1300∘1300∘C, and 1350∘1350∘C. Measured dielectric constants were up to 35,000, with achieved very high values in both atmospheres. Field emission scanning electron microscopy (FESEM) was used for morphological characterization, revealing a porous structure in all the samples. The software image analysis of FESEM images showed a connection between particle and pore size distribution, as well as porosity. Based on the data from the image analysis, the prediction of dielectric properties in relation to morphology indicated that yttrium-based organometallic salt reduced oxygen vacancy generation in N2 atmosphere. DC bias sensitivity measurements showed that samples with higher dielectric constant had more pronounced sensitivity to voltage change, but most of the samples were stable up to 100 V, making our modified BTO a promising candidate for capacitors.
T2  - Modern Physics Letters B
T1  - Sintering parameters influence on dielectric properties of modified nano-BaTiO3 ceramics
VL  - 36
IS  - 19
SP  - 2250060
DO  - 10.1142/S0217984922500609
ER  - 

@article{
author = "Stajčić, Aleksandar and Stajčić, Ivana and Mitić, Vojislav V. and Lu, Chun-An and Vlahović, Branislav and Vasiljević-Radović, Dana",
year = "2022",
abstract = "BaTiO3 (BTO) is considered the most commonly used ceramic material in multilayer ceramic capacitors due to its desirable dielectric properties. Considering that the miniaturization of electronic devices represents an expanding field of research, modification of BTO has been performed to increase dielectric constant and DC bias characteristic/sensitivity. This research presents the effect of N2 and air atmospheres on morphological and dielectric properties of BTO nanoparticles modified with organometallic salt at sintering temperatures of 1200∘1200∘C, 1250∘1250∘C, 1300∘1300∘C, and 1350∘1350∘C. Measured dielectric constants were up to 35,000, with achieved very high values in both atmospheres. Field emission scanning electron microscopy (FESEM) was used for morphological characterization, revealing a porous structure in all the samples. The software image analysis of FESEM images showed a connection between particle and pore size distribution, as well as porosity. Based on the data from the image analysis, the prediction of dielectric properties in relation to morphology indicated that yttrium-based organometallic salt reduced oxygen vacancy generation in N2 atmosphere. DC bias sensitivity measurements showed that samples with higher dielectric constant had more pronounced sensitivity to voltage change, but most of the samples were stable up to 100 V, making our modified BTO a promising candidate for capacitors.",
journal = "Modern Physics Letters B",
title = "Sintering parameters influence on dielectric properties of modified nano-BaTiO3 ceramics",
volume = "36",
number = "19",
pages = "2250060",
doi = "10.1142/S0217984922500609"
}

Stajčić, A., Stajčić, I., Mitić, V. V., Lu, C., Vlahović, B.,& Vasiljević-Radović, D.. (2022). Sintering parameters influence on dielectric properties of modified nano-BaTiO3 ceramics. in Modern Physics Letters B, 36(19), 2250060.
https://doi.org/10.1142/S0217984922500609

Stajčić A, Stajčić I, Mitić VV, Lu C, Vlahović B, Vasiljević-Radović D. Sintering parameters influence on dielectric properties of modified nano-BaTiO3 ceramics. in Modern Physics Letters B. 2022;36(19):2250060.
doi:10.1142/S0217984922500609 .

Stajčić, Aleksandar, Stajčić, Ivana, Mitić, Vojislav V., Lu, Chun-An, Vlahović, Branislav, Vasiljević-Radović, Dana, "Sintering parameters influence on dielectric properties of modified nano-BaTiO3 ceramics" in Modern Physics Letters B, 36, no. 19 (2022):2250060,
https://doi.org/10.1142/S0217984922500609 . .

TY  - JOUR
AU  - Stajčić, Ivana
AU  - Stajčić, Aleksandar
AU  - Serpa, Cristina
AU  - Vasiljević-Radović, Dana
AU  - Ranđelović, Branislav
AU  - Radojević, Vesna
AU  - Fecht, Hans
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10576
AB  - Polymers and polymer matrix composites are commonly used materials with applications extending from packaging materials to delicate electronic devices. Epoxy resins and fiber-reinforced epoxy-based composites have been used as adhesives and construction parts. Fractal analysis has been recognized in materials science as a valuable tool for the microstructural characterization of composites by connecting fractal characteristics with composites’ functional properties. In this study, fractal reconstructions of different microstructural shapes in an epoxy-based composite were performed on field emission scanning electron microscopy (FESEM) images. These images were of glass fiber reinforced epoxy as well as a hybrid composite containing both glass and electrospun polystyrene fibers in an epoxy matrix. Fractal reconstruction enables the identification of self-similarity in the fractal structure, which represents a novelty in analyzing the fractal properties of materials. Fractal Real Finder software, based on the mathematical affine fractal regression model, was employed to reconstruct different microstructure shapes and calculate fractal dimensions to develop a method of predicting the optimal structure–property relations in composite materials in the future.
T2  - Fractal and Fractional
T1  - Microstructure of Epoxy-Based Composites: Fractal Nature Analysis †
VL  - 6
IS  - 12
SP  - 741
DO  - 10.3390/fractalfract6120741
ER  - 

@article{
author = "Stajčić, Ivana and Stajčić, Aleksandar and Serpa, Cristina and Vasiljević-Radović, Dana and Ranđelović, Branislav and Radojević, Vesna and Fecht, Hans",
year = "2022",
abstract = "Polymers and polymer matrix composites are commonly used materials with applications extending from packaging materials to delicate electronic devices. Epoxy resins and fiber-reinforced epoxy-based composites have been used as adhesives and construction parts. Fractal analysis has been recognized in materials science as a valuable tool for the microstructural characterization of composites by connecting fractal characteristics with composites’ functional properties. In this study, fractal reconstructions of different microstructural shapes in an epoxy-based composite were performed on field emission scanning electron microscopy (FESEM) images. These images were of glass fiber reinforced epoxy as well as a hybrid composite containing both glass and electrospun polystyrene fibers in an epoxy matrix. Fractal reconstruction enables the identification of self-similarity in the fractal structure, which represents a novelty in analyzing the fractal properties of materials. Fractal Real Finder software, based on the mathematical affine fractal regression model, was employed to reconstruct different microstructure shapes and calculate fractal dimensions to develop a method of predicting the optimal structure–property relations in composite materials in the future.",
journal = "Fractal and Fractional",
title = "Microstructure of Epoxy-Based Composites: Fractal Nature Analysis †",
volume = "6",
number = "12",
pages = "741",
doi = "10.3390/fractalfract6120741"
}

Stajčić, I., Stajčić, A., Serpa, C., Vasiljević-Radović, D., Ranđelović, B., Radojević, V.,& Fecht, H.. (2022). Microstructure of Epoxy-Based Composites: Fractal Nature Analysis †. in Fractal and Fractional, 6(12), 741.
https://doi.org/10.3390/fractalfract6120741

Stajčić I, Stajčić A, Serpa C, Vasiljević-Radović D, Ranđelović B, Radojević V, Fecht H. Microstructure of Epoxy-Based Composites: Fractal Nature Analysis †. in Fractal and Fractional. 2022;6(12):741.
doi:10.3390/fractalfract6120741 .

Stajčić, Ivana, Stajčić, Aleksandar, Serpa, Cristina, Vasiljević-Radović, Dana, Ranđelović, Branislav, Radojević, Vesna, Fecht, Hans, "Microstructure of Epoxy-Based Composites: Fractal Nature Analysis †" in Fractal and Fractional, 6, no. 12 (2022):741,
https://doi.org/10.3390/fractalfract6120741 . .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12355
AB  - This paper considers possible uses of fruit-based waste (Goji berry mesocarp (GBM)) for the production of key platform chemicals (5-hydroxymethylfurfural (5-HMF)) through thermochemical conversion via slow pyrolysis, which was performed using simultaneous thermal analysis (STA). Originality and significance of this research is reflected in novel insights of fructose molecule role in the production of 5-hydroxymethylfurfural (5-HMF) through structural characteristics, manifesting reciprocal catalysis behaviour in an endergonic reaction pathway, giving high energy products. Based on proposed experimental and theoretical networks, the unwanted side products are totally blocked, where established results in this research clearly show advantages of synergistic work of the substrate molecule (glucose) and pseudo-catalyst (fructose) for the effective production of 5-HMF. The fructose self-repaired (isomerization) cycle through ‘open’ to ‘closed’ structure organization was explained as the key factor, which was responsible for the fructose effective autocatalytic lineage to the desired product, interpreting high yields of 5-HMF.
AB  - Овај рад разматра могућу употребу отпада на бази воћа (Гоји бобица месокарпа (ГБМ)) за производњу кључних платформских хемикалија (5-хидроксиметилфурфурала (5-ХМФ)) кроз термо хемијску конверзију путем споре пиролизе, која је изведена коришћењем симултане термичке анализе (СТА). Оригиналност и значај овог истраживања огледа се у новим спознајама о улози молекула фруктозе у производњи 5-хидроксиметилфурфурала (5-ХМФ) кроз структурне карактеристике, манифестујући реципрочно понашање катализе у путу ендергонске реакције, дајући производе високе енергије. На основу предложених експерименталних и теоретских мрежа, нежељени споредни производи су потпуно блокирани, при чему утврђени резултати у овом истраживању јасно показују предност и синергистичког рада молекула супстрата (глукозе) и псеудо катализатора (фруктозе) за ефикасну производњу 5-ХМФ. Циклус фруктозе који се само поправља (изомеризација) кроз организацију „отворене“ до „затворене“ структуре објашњен је као кључни фактор, који је био одговоран за ефикасну аутокаталитичку линију фруктозе до жељеног производа, тумачећи високе приносе 5-ХМФ-а.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM)
T1  - Endergonski autokatalitički ciklus fruktoze u efikasnoj proizvodnjI 5-Hidroksimetilfurfurala (5-HMF) iz spore pirolize mezokarpa goji bobica (GBM)
SP  - 77
EP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12355
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This paper considers possible uses of fruit-based waste (Goji berry mesocarp (GBM)) for the production of key platform chemicals (5-hydroxymethylfurfural (5-HMF)) through thermochemical conversion via slow pyrolysis, which was performed using simultaneous thermal analysis (STA). Originality and significance of this research is reflected in novel insights of fructose molecule role in the production of 5-hydroxymethylfurfural (5-HMF) through structural characteristics, manifesting reciprocal catalysis behaviour in an endergonic reaction pathway, giving high energy products. Based on proposed experimental and theoretical networks, the unwanted side products are totally blocked, where established results in this research clearly show advantages of synergistic work of the substrate molecule (glucose) and pseudo-catalyst (fructose) for the effective production of 5-HMF. The fructose self-repaired (isomerization) cycle through ‘open’ to ‘closed’ structure organization was explained as the key factor, which was responsible for the fructose effective autocatalytic lineage to the desired product, interpreting high yields of 5-HMF., Овај рад разматра могућу употребу отпада на бази воћа (Гоји бобица месокарпа (ГБМ)) за производњу кључних платформских хемикалија (5-хидроксиметилфурфурала (5-ХМФ)) кроз термо хемијску конверзију путем споре пиролизе, која је изведена коришћењем симултане термичке анализе (СТА). Оригиналност и значај овог истраживања огледа се у новим спознајама о улози молекула фруктозе у производњи 5-хидроксиметилфурфурала (5-ХМФ) кроз структурне карактеристике, манифестујући реципрочно понашање катализе у путу ендергонске реакције, дајући производе високе енергије. На основу предложених експерименталних и теоретских мрежа, нежељени споредни производи су потпуно блокирани, при чему утврђени резултати у овом истраживању јасно показују предност и синергистичког рада молекула супстрата (глукозе) и псеудо катализатора (фруктозе) за ефикасну производњу 5-ХМФ. Циклус фруктозе који се само поправља (изомеризација) кроз организацију „отворене“ до „затворене“ структуре објашњен је као кључни фактор, који је био одговоран за ефикасну аутокаталитичку линију фруктозе до жељеног производа, тумачећи високе приносе 5-ХМФ-а.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM), Endergonski autokatalitički ciklus fruktoze u efikasnoj proizvodnjI 5-Hidroksimetilfurfurala (5-HMF) iz spore pirolize mezokarpa goji bobica (GBM)",
pages = "77-83",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12355"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM). in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 77-83.
https://hdl.handle.net/21.15107/rcub_vinar_12355

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM). in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings. 2022;:77-83.
https://hdl.handle.net/21.15107/rcub_vinar_12355 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "Fructose endergonic autocatalytic cycle in efficient production of 5-Hydroxymethylfurfural (5-HMF) from slow pyrolysis of goji berry mesocarp (GBM)" in ICREPS : 10th International Conference on Renewable Electrical Power Sources : Proceedings (2022):77-83,
https://hdl.handle.net/21.15107/rcub_vinar_12355 .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12364
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts
T1  - TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp
SP  - 155
EP  - 155
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12364
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts",
title = "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp",
pages = "155-155",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12364"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts, 155-155.
https://hdl.handle.net/21.15107/rcub_vinar_12364

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts. 2022;:155-155.
https://hdl.handle.net/21.15107/rcub_vinar_12364 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Book of abstracts (2022):155-155,
https://hdl.handle.net/21.15107/rcub_vinar_12364 .

TY  - CONF
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Manić, Nebojša
AU  - Stajčić, Ivana
AU  - Janković, Bojan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12615
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
C3  - PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings
T1  - TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp
VL  - 2
SP  - 553
EP  - 556
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12615
ER  - 

@conference{
author = "Veljković, Filip and Veličković, Suzana and Manić, Nebojša and Stajčić, Ivana and Janković, Bojan",
year = "2022",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
journal = "PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings",
title = "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp",
volume = "2",
pages = "553-556",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12615"
}

Veljković, F., Veličković, S., Manić, N., Stajčić, I.,& Janković, B.. (2022). TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, 2, 553-556.
https://hdl.handle.net/21.15107/rcub_vinar_12615

Veljković F, Veličković S, Manić N, Stajčić I, Janković B. TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp. in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings. 2022;2:553-556.
https://hdl.handle.net/21.15107/rcub_vinar_12615 .

Veljković, Filip, Veličković, Suzana, Manić, Nebojša, Stajčić, Ivana, Janković, Bojan, "TG-DTG analysis of fruit-based waste pyrolysis: A case study of goji berry mesocarp" in PHYSICAL CHEMISTRY 2022 : 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry : Proceedings, 2 (2022):553-556,
https://hdl.handle.net/21.15107/rcub_vinar_12615 .

TY  - JOUR
AU  - Veljković, Filip M.
AU  - Radović, Ivana M.
AU  - Toprek, Dragan
AU  - Petrović, Đorđe
AU  - Stoiljković, Milovan
AU  - Mitić, Vojislav V.
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10084
AB  - Due to the increased use of yttrium in agriculture and industry, there is a growing interest in the impact of yttrium on the environment and human health. Developing novel procedures to detect and quantify species of yttrium represents an important task. In this work, we apply laser desorption/ionization-mass spectrometry (LDI-MS) to detect cluster ions of the solution of yttrium(III) chloride (YCl3) at different pH values. The density functional theory (DFT) calculations were used to reveal the energetically most favored structures of the anions and cations chosen from the LDI-MS results. Examination of the positive and negative mode LDI mass spectra of YCl3 showed the presence of the heterogeneous mononuclear and polynuclear clusters, such as [YCl(OH) (H2O)3]++, [Y2(H2O)]++, [Y4H2(H2O)4]++, and [Y5O4H3]++ (at pH 2 and 5) and [Y2Cl2(H2O)2]−−, [Y2O5(HCl)(OH)]−−, and [Y3OH3(OH)2(H2O)]−− (at pH 2, 5, and 10). The variation in the pH solution of YCl3 slightly affects the LDI mass spectrum of these yttrium clusters. It has only been noticed that the [Y4H2(H2O)4]++ cluster ions were not detected at pH 10. These results can become a guide in the detection of yttrium chloride by LDI-MS in real samples in different fields (ecological, food, and human).
T2  - Modern Physics Letters B
T1  - Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride
VL  - 35
IS  - 35
SP  - 2150454
DO  - 10.1142/S0217984921504546
ER  - 

@article{
author = "Veljković, Filip M. and Radović, Ivana M. and Toprek, Dragan and Petrović, Đorđe and Stoiljković, Milovan and Mitić, Vojislav V. and Veličković, Suzana",
year = "2021",
abstract = "Due to the increased use of yttrium in agriculture and industry, there is a growing interest in the impact of yttrium on the environment and human health. Developing novel procedures to detect and quantify species of yttrium represents an important task. In this work, we apply laser desorption/ionization-mass spectrometry (LDI-MS) to detect cluster ions of the solution of yttrium(III) chloride (YCl3) at different pH values. The density functional theory (DFT) calculations were used to reveal the energetically most favored structures of the anions and cations chosen from the LDI-MS results. Examination of the positive and negative mode LDI mass spectra of YCl3 showed the presence of the heterogeneous mononuclear and polynuclear clusters, such as [YCl(OH) (H2O)3]++, [Y2(H2O)]++, [Y4H2(H2O)4]++, and [Y5O4H3]++ (at pH 2 and 5) and [Y2Cl2(H2O)2]−−, [Y2O5(HCl)(OH)]−−, and [Y3OH3(OH)2(H2O)]−− (at pH 2, 5, and 10). The variation in the pH solution of YCl3 slightly affects the LDI mass spectrum of these yttrium clusters. It has only been noticed that the [Y4H2(H2O)4]++ cluster ions were not detected at pH 10. These results can become a guide in the detection of yttrium chloride by LDI-MS in real samples in different fields (ecological, food, and human).",
journal = "Modern Physics Letters B",
title = "Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride",
volume = "35",
number = "35",
pages = "2150454",
doi = "10.1142/S0217984921504546"
}

Veljković, F. M., Radović, I. M., Toprek, D., Petrović, Đ., Stoiljković, M., Mitić, V. V.,& Veličković, S.. (2021). Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride. in Modern Physics Letters B, 35(35), 2150454.
https://doi.org/10.1142/S0217984921504546

Veljković FM, Radović IM, Toprek D, Petrović Đ, Stoiljković M, Mitić VV, Veličković S. Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride. in Modern Physics Letters B. 2021;35(35):2150454.
doi:10.1142/S0217984921504546 .

Veljković, Filip M., Radović, Ivana M., Toprek, Dragan, Petrović, Đorđe, Stoiljković, Milovan, Mitić, Vojislav V., Veličković, Suzana, "Laser desorption/ionization time-of-flight mass spectrometry of yttrium(III) chloride" in Modern Physics Letters B, 35, no. 35 (2021):2150454,
https://doi.org/10.1142/S0217984921504546 . .

TY  - CONF
AU  - Veljković, Filip M.
AU  - Radović, Ivana M.
AU  - Drakulić, Dunja R.
AU  - Dimitrijević, Stevan
AU  - Dimitrijević, Silvana
AU  - Stoiljković, Milovan
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10789
AB  - Silver alloys are generally used in the different fields of industry, including chemical processing, construction, heat exchangers, etc. Although Ag-Cu-Zn-Cd type of alloys, were widely exploited in the second half of the 20th century for their excellent properties, its use is forbidden in the EU due to the high toxicity of cadmium vapors. Ag-Cu-In type of alloy is a good alternative to Ag-Cu-Zn-Cd alloys, with great properties and can be used in various fields of industry. Most common methods for characterization of surface corrosion films of Ag-Cu alloys are: X-ray diffraction (XRD), scanning electron microscopy with energy dispersion spectroscopy (SEM-EDS), Raman spectroscopy and atomic force microscopy (AFM). Our current study focuses on the application of laser desorption ionization mass spectrometry (LDI MS) for determination of corrosion products of Ag-Cu alloy. The aim of this study was to confirm LDI MS as a fast, accurate and reliable method for determination of corrosion products on the surface of Ag-Cu-In alloy.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10789
ER  - 

@conference{
author = "Veljković, Filip M. and Radović, Ivana M. and Drakulić, Dunja R. and Dimitrijević, Stevan and Dimitrijević, Silvana and Stoiljković, Milovan and Veličković, Suzana",
year = "2021",
abstract = "Silver alloys are generally used in the different fields of industry, including chemical processing, construction, heat exchangers, etc. Although Ag-Cu-Zn-Cd type of alloys, were widely exploited in the second half of the 20th century for their excellent properties, its use is forbidden in the EU due to the high toxicity of cadmium vapors. Ag-Cu-In type of alloy is a good alternative to Ag-Cu-Zn-Cd alloys, with great properties and can be used in various fields of industry. Most common methods for characterization of surface corrosion films of Ag-Cu alloys are: X-ray diffraction (XRD), scanning electron microscopy with energy dispersion spectroscopy (SEM-EDS), Raman spectroscopy and atomic force microscopy (AFM). Our current study focuses on the application of laser desorption ionization mass spectrometry (LDI MS) for determination of corrosion products of Ag-Cu alloy. The aim of this study was to confirm LDI MS as a fast, accurate and reliable method for determination of corrosion products on the surface of Ag-Cu-In alloy.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10789"
}

Veljković, F. M., Radović, I. M., Drakulić, D. R., Dimitrijević, S., Dimitrijević, S., Stoiljković, M.,& Veličković, S.. (2021). Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 50.
https://hdl.handle.net/21.15107/rcub_vinar_10789

Veljković FM, Radović IM, Drakulić DR, Dimitrijević S, Dimitrijević S, Stoiljković M, Veličković S. Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:50.
https://hdl.handle.net/21.15107/rcub_vinar_10789 .

Veljković, Filip M., Radović, Ivana M., Drakulić, Dunja R., Dimitrijević, Stevan, Dimitrijević, Silvana, Stoiljković, Milovan, Veličković, Suzana, "Determination of corrosion products of Ag-Cu alloy by laser desorption ionization mass spectrometry" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):50,
https://hdl.handle.net/21.15107/rcub_vinar_10789 .

TY  - CONF
AU  - Veljković, Filip
AU  - Božić, Bojan
AU  - Stoiljković, Milovan
AU  - Radović, Ivana
AU  - Janković, Bojan
AU  - Ćurčić, Milica
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12616
AB  - This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings
T1  - Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry
VL  - 2
SP  - 705
EP  - 708
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12616
ER  - 

@conference{
author = "Veljković, Filip and Božić, Bojan and Stoiljković, Milovan and Radović, Ivana and Janković, Bojan and Ćurčić, Milica and Veličković, Suzana",
year = "2021",
abstract = "This work considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of Goji berry mesocarp (GBM) as sugar-rich feedstock was investigated using simultaneous thermal analysis (STA) measurements in non-isothermal conditions. Results reveal that pyrolysis of GBM represents a promising route to obtain important key platform chemical - 5-hydroxymethylfurfural (5-HMF). It was found that autocatalytic dehydration of fructose (in a presence of Lewis acids) is responsible for production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 and 15.0 K/min) trigger fructose autogenesis behavior which opens the transferability channel to glucose engagement for 5-HMF theoretical high yield production.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings",
title = "Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry",
volume = "2",
pages = "705-708",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12616"
}

Veljković, F., Božić, B., Stoiljković, M., Radović, I., Janković, B., Ćurčić, M.,& Veličković, S.. (2021). Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings
Belgrade : Society of Physical Chemists of Serbia., 2, 705-708.
https://hdl.handle.net/21.15107/rcub_vinar_12616

Veljković F, Božić B, Stoiljković M, Radović I, Janković B, Ćurčić M, Veličković S. Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry. in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings. 2021;2:705-708.
https://hdl.handle.net/21.15107/rcub_vinar_12616 .

Veljković, Filip, Božić, Bojan, Stoiljković, Milovan, Radović, Ivana, Janković, Bojan, Ćurčić, Milica, Veličković, Suzana, "Detection and isotopic distribution of oxaprozine complex containing Cu(II) ions by LDI Mass Spectrometry" in PHYSICAL CHEMISTRY 2021 : 15th international conference on fundamental and applied aspects of physical chemistry : Proceedings, 2 (2021):705-708,
https://hdl.handle.net/21.15107/rcub_vinar_12616 .

TY  - CONF
AU  - Čebela, Maria
AU  - Marković, Bojana
AU  - Radović, Ivana M.
AU  - Stajičić, Aleksandar
AU  - Rosić, Milena
AU  - Panić, Ivan
AU  - Maletić, Dejan
AU  - Mitić, Vojislav V.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10838
AB  - From the technological point of view, the mutual control of electric and magnetic properties is an attractive possibility, but the number of candidate multiferroic materials is limited. One of the most studied of them, BiFeO3 , has critical conditions for synthesizing single phase since the phase temperature stability range is very narrow. Bismuth ferrite (BFO) particles were synthesized by controlled hydrothermal process, where the particles of small sizes and high purity were obtained. A fitting refinement procedure using the Rietveld method was performed. Bismuth ferrite crystallizes in the perovskite type structure (α-BiFeO3 ) with rhombohedral space group R3c. The effects of thermal treatment through applied hydrothermal method on the obtained BFO grains morphology were evaluated by SEM and TEM analyses.SEM analysis showed that grains are very well crystallized, with non- fragmented crystal flats. Individual particles HRTEM analysis confirmed the evidence of ultra-fine single crystal particles, with characteristic (012) crystal planes. Furthermore, HRTEM confirmed the existence of twin stacking faults responsible for synthesized fine particles enhanced magnetic properties. The EPR results suggested the existence and participation of electrons trapped by vacancies or defects. It has been proposed that the existence of Fe 3+−OV defect complex could be generated at elevated temperatures followed by formation of Fe 3+ ions, which intensely provide the local 3d moments.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - BiFeO3 fine powder controlled hydrothermal process synthesis and characterization
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10838
ER  - 

@conference{
author = "Čebela, Maria and Marković, Bojana and Radović, Ivana M. and Stajičić, Aleksandar and Rosić, Milena and Panić, Ivan and Maletić, Dejan and Mitić, Vojislav V.",
year = "2021",
abstract = "From the technological point of view, the mutual control of electric and magnetic properties is an attractive possibility, but the number of candidate multiferroic materials is limited. One of the most studied of them, BiFeO3 , has critical conditions for synthesizing single phase since the phase temperature stability range is very narrow. Bismuth ferrite (BFO) particles were synthesized by controlled hydrothermal process, where the particles of small sizes and high purity were obtained. A fitting refinement procedure using the Rietveld method was performed. Bismuth ferrite crystallizes in the perovskite type structure (α-BiFeO3 ) with rhombohedral space group R3c. The effects of thermal treatment through applied hydrothermal method on the obtained BFO grains morphology were evaluated by SEM and TEM analyses.SEM analysis showed that grains are very well crystallized, with non- fragmented crystal flats. Individual particles HRTEM analysis confirmed the evidence of ultra-fine single crystal particles, with characteristic (012) crystal planes. Furthermore, HRTEM confirmed the existence of twin stacking faults responsible for synthesized fine particles enhanced magnetic properties. The EPR results suggested the existence and participation of electrons trapped by vacancies or defects. It has been proposed that the existence of Fe 3+−OV defect complex could be generated at elevated temperatures followed by formation of Fe 3+ ions, which intensely provide the local 3d moments.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "BiFeO3 fine powder controlled hydrothermal process synthesis and characterization",
pages = "79",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10838"
}

Čebela, M., Marković, B., Radović, I. M., Stajičić, A., Rosić, M., Panić, I., Maletić, D.,& Mitić, V. V.. (2021). BiFeO3 fine powder controlled hydrothermal process synthesis and characterization. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 79.
https://hdl.handle.net/21.15107/rcub_vinar_10838

Čebela M, Marković B, Radović IM, Stajičić A, Rosić M, Panić I, Maletić D, Mitić VV. BiFeO3 fine powder controlled hydrothermal process synthesis and characterization. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:79.
https://hdl.handle.net/21.15107/rcub_vinar_10838 .

Čebela, Maria, Marković, Bojana, Radović, Ivana M., Stajičić, Aleksandar, Rosić, Milena, Panić, Ivan, Maletić, Dejan, Mitić, Vojislav V., "BiFeO3 fine powder controlled hydrothermal process synthesis and characterization" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):79,
https://hdl.handle.net/21.15107/rcub_vinar_10838 .

TY  - CONF
AU  - Radović, Ivana M.
AU  - Stajčić, Aleksandar P.
AU  - Mitić, Vojislav V.
AU  - Serpa, Cristina
AU  - Paunović, Vesna
AU  - Ranđelović, Branislav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10019
AB  - In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension. © 2021 IEEE.
C3  - Proceedings of the International Conference on Microelectronics, ICM
T1  - Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure
VL  - September
SP  - 203
EP  - 206
DO  - 10.1109/MIEL52794.2021.9569054
ER  - 

@conference{
author = "Radović, Ivana M. and Stajčić, Aleksandar P. and Mitić, Vojislav V. and Serpa, Cristina and Paunović, Vesna and Ranđelović, Branislav",
year = "2021",
abstract = "In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension. © 2021 IEEE.",
journal = "Proceedings of the International Conference on Microelectronics, ICM",
title = "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure",
volume = "September",
pages = "203-206",
doi = "10.1109/MIEL52794.2021.9569054"
}

Radović, I. M., Stajčić, A. P., Mitić, V. V., Serpa, C., Paunović, V.,& Ranđelović, B.. (2021). Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in Proceedings of the International Conference on Microelectronics, ICM, September, 203-206.
https://doi.org/10.1109/MIEL52794.2021.9569054

Radović IM, Stajčić AP, Mitić VV, Serpa C, Paunović V, Ranđelović B. Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in Proceedings of the International Conference on Microelectronics, ICM. 2021;September:203-206.
doi:10.1109/MIEL52794.2021.9569054 .

Radović, Ivana M., Stajčić, Aleksandar P., Mitić, Vojislav V., Serpa, Cristina, Paunović, Vesna, Ranđelović, Branislav, "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure" in Proceedings of the International Conference on Microelectronics, ICM, September (2021):203-206,
https://doi.org/10.1109/MIEL52794.2021.9569054 . .

TY  - CONF
AU  - Radović, Ivana M.
AU  - Mitić, Vojislav V.
AU  - Stajčić, Aleksandar
AU  - Serpa, Cristina
AU  - Ribar, Srđan
AU  - Ranđelović, Branislav
AU  - Vlahović, Branislav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10787
AB  - Polymers offer the possibility of different reinforcement incorporation due to a broad range of chemical structures.Along with this feature, their light weight and processing ease made them a class of materials that have been applied in construction parts, drug delivery agents or electronic devices. Epoxy-based composites have used as insulators in microelectronic devices due to its chemical resistance, good adhesion properties and endurance. As epoxies have low fracture resistance, they are often reinforced with different kinds of fibers.With thorough knowledge of the structure, physical properties can be predicted and included in the processing of future composites, especially that electronic materials minituarization brought micro- and nanoscale level properties at spotlight. Fractal nature analysis is a mathematical method that has proved to be efficient in grain interface properties applied on perovskite ceramic materials.In our study, fiber shape reconstruction and determination of Hausdorff dimension have been achieved with the application of fractal regression model employed in software Fractal Real Finder opening a new path for the prediction of reinforcement shape and size, all with the aim of processing composite materials with desired properties.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Fractal reconstruction of fiber-reinforced polymer composites
SP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10787
ER  - 

@conference{
author = "Radović, Ivana M. and Mitić, Vojislav V. and Stajčić, Aleksandar and Serpa, Cristina and Ribar, Srđan and Ranđelović, Branislav and Vlahović, Branislav",
year = "2021",
abstract = "Polymers offer the possibility of different reinforcement incorporation due to a broad range of chemical structures.Along with this feature, their light weight and processing ease made them a class of materials that have been applied in construction parts, drug delivery agents or electronic devices. Epoxy-based composites have used as insulators in microelectronic devices due to its chemical resistance, good adhesion properties and endurance. As epoxies have low fracture resistance, they are often reinforced with different kinds of fibers.With thorough knowledge of the structure, physical properties can be predicted and included in the processing of future composites, especially that electronic materials minituarization brought micro- and nanoscale level properties at spotlight. Fractal nature analysis is a mathematical method that has proved to be efficient in grain interface properties applied on perovskite ceramic materials.In our study, fiber shape reconstruction and determination of Hausdorff dimension have been achieved with the application of fractal regression model employed in software Fractal Real Finder opening a new path for the prediction of reinforcement shape and size, all with the aim of processing composite materials with desired properties.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Fractal reconstruction of fiber-reinforced polymer composites",
pages = "49",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10787"
}

Radović, I. M., Mitić, V. V., Stajčić, A., Serpa, C., Ribar, S., Ranđelović, B.,& Vlahović, B.. (2021). Fractal reconstruction of fiber-reinforced polymer composites. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 49.
https://hdl.handle.net/21.15107/rcub_vinar_10787

Radović IM, Mitić VV, Stajčić A, Serpa C, Ribar S, Ranđelović B, Vlahović B. Fractal reconstruction of fiber-reinforced polymer composites. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:49.
https://hdl.handle.net/21.15107/rcub_vinar_10787 .

Radović, Ivana M., Mitić, Vojislav V., Stajčić, Aleksandar, Serpa, Cristina, Ribar, Srđan, Ranđelović, Branislav, Vlahović, Branislav, "Fractal reconstruction of fiber-reinforced polymer composites" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):49,
https://hdl.handle.net/21.15107/rcub_vinar_10787 .

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Radojević, Miloš
AU  - Stojiljković, Milovan
AU  - Stajčić, Ivana
AU  - Ćurčić, Milica
AU  - Veličković, Suzana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12278
AB  - One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For thatreason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventionalhydrogen production process (electrolysis) now indirectly accounts for more than 2% oftotal global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonizationof hydrogen production, resulting in green hydrogen. The one of the pathways for production of greenhydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.However, different feedstock parameters have an impact on the thermochemical conversion processi.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis offundamental experimental data obtained by thermogravimetry and mass spectrometry. According tothe proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identificationof syngas yield and composition, with special attention to the hydrogen content in the syngas.The experimental results for two biomass samples were presented and based on performed semiquantitativeanalysis the evaluating of the possibilities for using considered feedstocks for green hydrogenproduction was done. Further discussions and comparisons with literature data were alsopresented.
AB  - Jedan od ciljeva koje je čovečanstvo postavilo do 2050. godine je dekarbonizacija u energetskom sektoru. Iz tog razloga upotreba vodonika kao alternativnog goriva izgleda kao moguće rešenje. Međutim, konvencionalni proces proizvodnje vodonika (elektroliza) sada indirektno čini više od 2% ukupne globalne emisije CO2. Jedan od scenarija za dostizanje postavljenih ciljeva uključuje dekarbonizaciju proizvodnje vodonika, što rezultira zelenim vodonikom. Jedan od načina za proizvodnju zelenog vodonika je moguć putem gasifikacije lignoceluloznih materijala (biomasa kao sirovina) u sintetički gas. Međutim, različiti parametri sirovine utiču na proces termohemijske konverzije, odnosno prinos i sastav sintetičkog gasa. Ovaj rad prezentuje novu semi-kvantitativnu analizu eksperimentalnih podataka dobijenih fundamentalnim eksperimne-talnim tehnikama, termogravimetrijom i masenom spektrometrijom. Prema predloženoj metodologiji na laboratorijskom nivou moguće je proceniti kvalitet sirovine za identifikaciju prinosa i sastava sintetičkog gasa, sa posebnom pažnjom na sadržaj vodonika u sintetičkom gasu. Predstavljeni su eksperimentalni rezultati za dva uzorka biomase i na osnovu izvršene semi-kvantitativne analize procenjena je mogućnostkorišćenja razmatranih sirovina za proizvodnju zelenog vodonika. Takođe je izvršena detaljna diskusija dobijenih rezultata kao i prikazana poređenja sa podacima iz lite-rature.)
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification
T1  - Semi-kvantitativna analiza za procenu održive proizvodnje zelenog vodonika gasifikacijom biomase
VL  - 9
IS  - 1
SP  - 273
EP  - 280
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12278
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Manić, Nebojša and Radojević, Miloš and Stojiljković, Milovan and Stajčić, Ivana and Ćurčić, Milica and Veličković, Suzana",
year = "2021",
abstract = "One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For thatreason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventionalhydrogen production process (electrolysis) now indirectly accounts for more than 2% oftotal global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonizationof hydrogen production, resulting in green hydrogen. The one of the pathways for production of greenhydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.However, different feedstock parameters have an impact on the thermochemical conversion processi.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis offundamental experimental data obtained by thermogravimetry and mass spectrometry. According tothe proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identificationof syngas yield and composition, with special attention to the hydrogen content in the syngas.The experimental results for two biomass samples were presented and based on performed semiquantitativeanalysis the evaluating of the possibilities for using considered feedstocks for green hydrogenproduction was done. Further discussions and comparisons with literature data were alsopresented., Jedan od ciljeva koje je čovečanstvo postavilo do 2050. godine je dekarbonizacija u energetskom sektoru. Iz tog razloga upotreba vodonika kao alternativnog goriva izgleda kao moguće rešenje. Međutim, konvencionalni proces proizvodnje vodonika (elektroliza) sada indirektno čini više od 2% ukupne globalne emisije CO2. Jedan od scenarija za dostizanje postavljenih ciljeva uključuje dekarbonizaciju proizvodnje vodonika, što rezultira zelenim vodonikom. Jedan od načina za proizvodnju zelenog vodonika je moguć putem gasifikacije lignoceluloznih materijala (biomasa kao sirovina) u sintetički gas. Međutim, različiti parametri sirovine utiču na proces termohemijske konverzije, odnosno prinos i sastav sintetičkog gasa. Ovaj rad prezentuje novu semi-kvantitativnu analizu eksperimentalnih podataka dobijenih fundamentalnim eksperimne-talnim tehnikama, termogravimetrijom i masenom spektrometrijom. Prema predloženoj metodologiji na laboratorijskom nivou moguće je proceniti kvalitet sirovine za identifikaciju prinosa i sastava sintetičkog gasa, sa posebnom pažnjom na sadržaj vodonika u sintetičkom gasu. Predstavljeni su eksperimentalni rezultati za dva uzorka biomase i na osnovu izvršene semi-kvantitativne analize procenjena je mogućnostkorišćenja razmatranih sirovina za proizvodnju zelenog vodonika. Takođe je izvršena detaljna diskusija dobijenih rezultata kao i prikazana poređenja sa podacima iz lite-rature.)",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification, Semi-kvantitativna analiza za procenu održive proizvodnje zelenog vodonika gasifikacijom biomase",
volume = "9",
number = "1",
pages = "273-280",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12278"
}

Veljković, F., Janković, B., Manić, N., Radojević, M., Stojiljković, M., Stajčić, I., Ćurčić, M.,& Veličković, S.. (2021). A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification. in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 9(1), 273-280.
https://hdl.handle.net/21.15107/rcub_vinar_12278

Veljković F, Janković B, Manić N, Radojević M, Stojiljković M, Stajčić I, Ćurčić M, Veličković S. A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification. in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings. 2021;9(1):273-280.
https://hdl.handle.net/21.15107/rcub_vinar_12278 .

Veljković, Filip, Janković, Bojan, Manić, Nebojša, Radojević, Miloš, Stojiljković, Milovan, Stajčić, Ivana, Ćurčić, Milica, Veličković, Suzana, "A semi-quantitative analysis for evaluating the sustainable green hydrogen production by biomass gasification" in ICREPS : 9th International Conference on Renewable Electrical Power Sources : Proceedings, 9, no. 1 (2021):273-280,
https://hdl.handle.net/21.15107/rcub_vinar_12278 .

TY  - JOUR
AU  - Ćurčić, Milica
AU  - Hadžić, Branka B.
AU  - Gilić, Martina
AU  - Radojević, Vesna
AU  - Bjelajac, Anđelika
AU  - Radović, Ivana M.
AU  - Timotijević, Dejan
AU  - Romčević, Maja J.
AU  - Trajić, Jelena
AU  - Romčević, Nebojša Ž.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8494
AB  - The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite. © 2019 Elsevier B.V.
T2  - Physica E: Low-dimensional Systems and Nanostructures
T1  - Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites
VL  - 115
SP  - 113708
DO  - 10.1016/j.physe.2019.113708
ER  - 

@article{
author = "Ćurčić, Milica and Hadžić, Branka B. and Gilić, Martina and Radojević, Vesna and Bjelajac, Anđelika and Radović, Ivana M. and Timotijević, Dejan and Romčević, Maja J. and Trajić, Jelena and Romčević, Nebojša Ž.",
year = "2020",
abstract = "The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite. © 2019 Elsevier B.V.",
journal = "Physica E: Low-dimensional Systems and Nanostructures",
title = "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites",
volume = "115",
pages = "113708",
doi = "10.1016/j.physe.2019.113708"
}

Ćurčić, M., Hadžić, B. B., Gilić, M., Radojević, V., Bjelajac, A., Radović, I. M., Timotijević, D., Romčević, M. J., Trajić, J.,& Romčević, N. Ž.. (2020). Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E: Low-dimensional Systems and Nanostructures, 115, 113708.
https://doi.org/10.1016/j.physe.2019.113708

Ćurčić M, Hadžić BB, Gilić M, Radojević V, Bjelajac A, Radović IM, Timotijević D, Romčević MJ, Trajić J, Romčević NŽ. Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E: Low-dimensional Systems and Nanostructures. 2020;115:113708.
doi:10.1016/j.physe.2019.113708 .

Ćurčić, Milica, Hadžić, Branka B., Gilić, Martina, Radojević, Vesna, Bjelajac, Anđelika, Radović, Ivana M., Timotijević, Dejan, Romčević, Maja J., Trajić, Jelena, Romčević, Nebojša Ž., "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites" in Physica E: Low-dimensional Systems and Nanostructures, 115 (2020):113708,
https://doi.org/10.1016/j.physe.2019.113708 . .