TY  - CONF
AU  - Pergal, Marija
AU  - Brkljačić, Jelena
AU  - Pešić, Ivan
AU  - Dević, Gordana
AU  - Dojičinović, Biljana P.
AU  - Antić, Bratislav
AU  - Tovilović-Kovačević, Gordana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12227
AB  - Polyurethane (PU) and PU nanocomposites with good biocompatibility and mechanical properties can be used as the biomedical matrix and tissue engineering biomaterials. Magnetic nanoparticles, especially ferrite nanoparticles have attracted much interest due to their specific physicochemical properties in various areas including magnetic recording, biosensing, catalyst, drug delivery systems, magnetic resonance imaging (MRI) and cancer therapy. Despite all these advantages, the nanoparticle agglomeration reduces the efficiency of the nanoparticles, so the nanoparticle incorporation into an appropriate polymeric matrix to prepare organic-inorganic nanocomposites is a right direction in the current scenario of biomedical nanotechnology. In this study, organic-inorganic PU nanocomposites based on zinc and copper ferrites and with the same composition of PU were prepared. The properties of PU nanocomposites were evaluated by nanoindentation, water contact angle and water absorption measurements. The presence of the nanoferrite nanoparticles affects properties of PU nanocomposites such as bulk morphology, mechanical, and biological properties. The biocompatibility of PU nanocomposites was investigated by MTT assay and cell attachment using endothelial cells. According to the results, the prepared PU nanocomposites with noncytotoxic chemistry could be a potential choice for vascular implants development.
PB  - Niš : RAD Centre
C3  - RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts
T1  - Organic-inorganic nanocomposites for biomedical applications
SP  - 99
EP  - 99
DO  - 10.21175/rad.abstr.book.2023.19.20
ER  - 

@conference{
author = "Pergal, Marija and Brkljačić, Jelena and Pešić, Ivan and Dević, Gordana and Dojičinović, Biljana P. and Antić, Bratislav and Tovilović-Kovačević, Gordana",
year = "2023",
abstract = "Polyurethane (PU) and PU nanocomposites with good biocompatibility and mechanical properties can be used as the biomedical matrix and tissue engineering biomaterials. Magnetic nanoparticles, especially ferrite nanoparticles have attracted much interest due to their specific physicochemical properties in various areas including magnetic recording, biosensing, catalyst, drug delivery systems, magnetic resonance imaging (MRI) and cancer therapy. Despite all these advantages, the nanoparticle agglomeration reduces the efficiency of the nanoparticles, so the nanoparticle incorporation into an appropriate polymeric matrix to prepare organic-inorganic nanocomposites is a right direction in the current scenario of biomedical nanotechnology. In this study, organic-inorganic PU nanocomposites based on zinc and copper ferrites and with the same composition of PU were prepared. The properties of PU nanocomposites were evaluated by nanoindentation, water contact angle and water absorption measurements. The presence of the nanoferrite nanoparticles affects properties of PU nanocomposites such as bulk morphology, mechanical, and biological properties. The biocompatibility of PU nanocomposites was investigated by MTT assay and cell attachment using endothelial cells. According to the results, the prepared PU nanocomposites with noncytotoxic chemistry could be a potential choice for vascular implants development.",
publisher = "Niš : RAD Centre",
journal = "RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts",
title = "Organic-inorganic nanocomposites for biomedical applications",
pages = "99-99",
doi = "10.21175/rad.abstr.book.2023.19.20"
}

Pergal, M., Brkljačić, J., Pešić, I., Dević, G., Dojičinović, B. P., Antić, B.,& Tovilović-Kovačević, G.. (2023). Organic-inorganic nanocomposites for biomedical applications. in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts
Niš : RAD Centre., 99-99.
https://doi.org/10.21175/rad.abstr.book.2023.19.20

Pergal M, Brkljačić J, Pešić I, Dević G, Dojičinović BP, Antić B, Tovilović-Kovačević G. Organic-inorganic nanocomposites for biomedical applications. in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts. 2023;:99-99.
doi:10.21175/rad.abstr.book.2023.19.20 .

Pergal, Marija, Brkljačić, Jelena, Pešić, Ivan, Dević, Gordana, Dojičinović, Biljana P., Antić, Bratislav, Tovilović-Kovačević, Gordana, "Organic-inorganic nanocomposites for biomedical applications" in RAD 2023 : 11th International Conference on Radiation Natural Sciences, Medicine, Engineering, Technology and Ecology : Book of Abstracts (2023):99-99,
https://doi.org/10.21175/rad.abstr.book.2023.19.20 . .

TY  - JOUR
AU  - Petronijević, Ivan M.
AU  - Dudić, Duško
AU  - Cerović, Dragana D.
AU  - Maletić, Slavica B.
AU  - Marinković, Filip
AU  - Pergal, Marija V.
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11102
AB  - The dielectric properties of nanocomposites based on isotactic polypropylene (iPP) and atactic polystyrene (aPS) obtained by novel, simple, and environmentally friendly treatment technique have been analyzed in this study. The best treatment conditions to obtain nanocomposites with embedded core-shell particles with enhanced dielectric properties were considered. Treatment of polymer matrices in water solution iron(II)-chloride had the most pronounced precipitation effect, that was directly related to the appearance of higher transition metal concentrations in the iPP and aPS matrices, in comparison to treatments in the other two transition metal salts, MnCl2 and NiCl2. Relative dielectric constant and loss tangent have been studied in the frequency range from 20 Hz to 9 MHz. Embedded core-shell nanoparticles (from 15 to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) resulted in significant improvement (2.5% up to 9.1%) and stabilization of relative dielectric constant value toward higher frequencies and also lowering loss tangent in compare to starting polymer matrices. These properties indicate that materials obtained with the presented treatment technique can be applied as microelectronic packing and with further development of the method in order to obtain a higher concentration of metal ions as energy storage devices.
T2  - Polymers for Advanced Technologies
T1  - Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions
VL  - 34
IS  - 9
SP  - 2841
EP  - 2850
DO  - 10.1002/pat.6110
ER  - 

@article{
author = "Petronijević, Ivan M. and Dudić, Duško and Cerović, Dragana D. and Maletić, Slavica B. and Marinković, Filip and Pergal, Marija V. and Anđelković, Ljubica",
year = "2023",
abstract = "The dielectric properties of nanocomposites based on isotactic polypropylene (iPP) and atactic polystyrene (aPS) obtained by novel, simple, and environmentally friendly treatment technique have been analyzed in this study. The best treatment conditions to obtain nanocomposites with embedded core-shell particles with enhanced dielectric properties were considered. Treatment of polymer matrices in water solution iron(II)-chloride had the most pronounced precipitation effect, that was directly related to the appearance of higher transition metal concentrations in the iPP and aPS matrices, in comparison to treatments in the other two transition metal salts, MnCl2 and NiCl2. Relative dielectric constant and loss tangent have been studied in the frequency range from 20 Hz to 9 MHz. Embedded core-shell nanoparticles (from 15 to 150 nm in diameter) in a very small amount (1.72E-8 mol/cm3 to 1.17E-5 mol/cm3) resulted in significant improvement (2.5% up to 9.1%) and stabilization of relative dielectric constant value toward higher frequencies and also lowering loss tangent in compare to starting polymer matrices. These properties indicate that materials obtained with the presented treatment technique can be applied as microelectronic packing and with further development of the method in order to obtain a higher concentration of metal ions as energy storage devices.",
journal = "Polymers for Advanced Technologies",
title = "Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions",
volume = "34",
number = "9",
pages = "2841-2850",
doi = "10.1002/pat.6110"
}

Petronijević, I. M., Dudić, D., Cerović, D. D., Maletić, S. B., Marinković, F., Pergal, M. V.,& Anđelković, L.. (2023). Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions. in Polymers for Advanced Technologies, 34(9), 2841-2850.
https://doi.org/10.1002/pat.6110

Petronijević IM, Dudić D, Cerović DD, Maletić SB, Marinković F, Pergal MV, Anđelković L. Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions. in Polymers for Advanced Technologies. 2023;34(9):2841-2850.
doi:10.1002/pat.6110 .

Petronijević, Ivan M., Dudić, Duško, Cerović, Dragana D., Maletić, Slavica B., Marinković, Filip, Pergal, Marija V., Anđelković, Ljubica, "Dielectric properties of iPP and aPS nanocomposites with core-shell particles obtained by treatment in transition metal salt solutions" in Polymers for Advanced Technologies, 34, no. 9 (2023):2841-2850,
https://doi.org/10.1002/pat.6110 . .

TY  - CONF
AU  - Pergal, Marija
AU  - Kodranov, Igor
AU  - Vasiljević Radović, Dana
AU  - Nikodinović-Runić, Jasmina
AU  - Dojčinović, Biljana
AU  - Manojlović, Dragan
AU  - Antić, Bratislav
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11105
AB  - Polyurethane (PU) nanocomposites are highly utilized in biomedical devices/implants due to their excellent mechanical properties, good biocompatibility, and low cytotoxicity. These PU nanocomposites with silver nanoparticles are well known potent antimicrobial agents. Biocompatible magnetic nanoparticles such as ferrites has also gained attention especially in various fields of drug delivery, biosensing and magnetic resonance imaging which requires highly specific magnetic nanoparticle (MNP) properties such as uniform size distribution, less agglomeration and stability in the biological medium. Among MNP, copper and zinc ferrites have been broadly applicable in biomedical, optoelectronic, catalysis and drug delivery. With a view to design PU/ferrites nanocomposites and to explore their antimicrobial potential, the present preliminary study reports the preparation of PU nanocomposites with copper ferrite and zinc ferrite (1 wt.%) and with the same composition. The nanocomposites were characterized using water absorption and swelling measurements. The antimicrobial activity of these composites was investigated against four bacterial strains: Staphylococcus aureus, Enterococcus faecium, Pseudomonas aeruginosa, and Klebsiella pneumoniae, and one Candida strain, C. albicans and compared with those of PU nanocomposites with silver ferrite nanoparticles. PU nanocomposites based on zinc and copper ferrites did not show antimicrobial activity, on the contrary they supported microbial attachment and growth. However, PU nanocomposites with silver ferrite did not show significant antibacterial activity but show antifungal activity and it is related with hydrophilicity of the prepared materials.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; July 25-29; Herceg Novi, Montenegro
T1  - Polyurethane/ferrites composite materials:
A study on antimicrobial activity
DO  - 10.21175/rad.sum.abstr.book.2022.11.14
ER  - 

@conference{
author = "Pergal, Marija and Kodranov, Igor and Vasiljević Radović, Dana and Nikodinović-Runić, Jasmina and Dojčinović, Biljana and Manojlović, Dragan and Antić, Bratislav",
year = "2022",
abstract = "Polyurethane (PU) nanocomposites are highly utilized in biomedical devices/implants due to their excellent mechanical properties, good biocompatibility, and low cytotoxicity. These PU nanocomposites with silver nanoparticles are well known potent antimicrobial agents. Biocompatible magnetic nanoparticles such as ferrites has also gained attention especially in various fields of drug delivery, biosensing and magnetic resonance imaging which requires highly specific magnetic nanoparticle (MNP) properties such as uniform size distribution, less agglomeration and stability in the biological medium. Among MNP, copper and zinc ferrites have been broadly applicable in biomedical, optoelectronic, catalysis and drug delivery. With a view to design PU/ferrites nanocomposites and to explore their antimicrobial potential, the present preliminary study reports the preparation of PU nanocomposites with copper ferrite and zinc ferrite (1 wt.%) and with the same composition. The nanocomposites were characterized using water absorption and swelling measurements. The antimicrobial activity of these composites was investigated against four bacterial strains: Staphylococcus aureus, Enterococcus faecium, Pseudomonas aeruginosa, and Klebsiella pneumoniae, and one Candida strain, C. albicans and compared with those of PU nanocomposites with silver ferrite nanoparticles. PU nanocomposites based on zinc and copper ferrites did not show antimicrobial activity, on the contrary they supported microbial attachment and growth. However, PU nanocomposites with silver ferrite did not show significant antibacterial activity but show antifungal activity and it is related with hydrophilicity of the prepared materials.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; July 25-29; Herceg Novi, Montenegro",
title = "Polyurethane/ferrites composite materials:
A study on antimicrobial activity",
doi = "10.21175/rad.sum.abstr.book.2022.11.14"
}

Pergal, M., Kodranov, I., Vasiljević Radović, D., Nikodinović-Runić, J., Dojčinović, B., Manojlović, D.,& Antić, B.. (2022). Polyurethane/ferrites composite materials:
A study on antimicrobial activity. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; July 25-29; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia..
https://doi.org/10.21175/rad.sum.abstr.book.2022.11.14

Pergal M, Kodranov I, Vasiljević Radović D, Nikodinović-Runić J, Dojčinović B, Manojlović D, Antić B. Polyurethane/ferrites composite materials:
A study on antimicrobial activity. in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; July 25-29; Herceg Novi, Montenegro. 2022;.
doi:10.21175/rad.sum.abstr.book.2022.11.14 .

Pergal, Marija, Kodranov, Igor, Vasiljević Radović, Dana, Nikodinović-Runić, Jasmina, Dojčinović, Biljana, Manojlović, Dragan, Antić, Bratislav, "Polyurethane/ferrites composite materials:
A study on antimicrobial activity" in RAD 2022 : 10th Jubilee International Conference on Radiation in Various Fields of Research : book of abstracts; July 25-29; Herceg Novi, Montenegro (2022),
https://doi.org/10.21175/rad.sum.abstr.book.2022.11.14 . .

TY  - CONF
AU  - Pergal, Marija
AU  - Dojčinović, Biljana
AU  - Kodranov, Igor
AU  - Ostojić, Sanja
AU  - Ognjanović, Miloš
AU  - Stanković, Dalibor
AU  - Antić, Bratislav
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11682
AB  - The novel polyurethane composite films were prepared using in situ polymerization method in the
presence of silver ferrite nanoparticles (1 wt.%). Preparation, structure, and thermal characterization
of polyurethane/silver ferrite nanocomposites (PUFNCs) were investigated. The study of the effect
of soft segment content (from 30 to 60 wt.%) on the structure and thermal properties was performed
using FTIR, DSC, TGA and TEM analyses. The higher thermal stability was detected for PUFNCs
with higher soft segment content. The glass transition of the hard segment (TgHS) of PUFNCs
increased with decreasing soft segment content due to higher crosslinking density.
PB  - The Society of Physical Chemists of Serbia
C3  - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 : proceedings, Volume II, September 20-24
T1  - Thermal characterization of polyurethane/silver ferrite nanocomposites
SP  - 483
EP  - 486
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11682
ER  - 

@conference{
author = "Pergal, Marija and Dojčinović, Biljana and Kodranov, Igor and Ostojić, Sanja and Ognjanović, Miloš and Stanković, Dalibor and Antić, Bratislav",
year = "2021",
abstract = "The novel polyurethane composite films were prepared using in situ polymerization method in the
presence of silver ferrite nanoparticles (1 wt.%). Preparation, structure, and thermal characterization
of polyurethane/silver ferrite nanocomposites (PUFNCs) were investigated. The study of the effect
of soft segment content (from 30 to 60 wt.%) on the structure and thermal properties was performed
using FTIR, DSC, TGA and TEM analyses. The higher thermal stability was detected for PUFNCs
with higher soft segment content. The glass transition of the hard segment (TgHS) of PUFNCs
increased with decreasing soft segment content due to higher crosslinking density.",
publisher = "The Society of Physical Chemists of Serbia",
journal = "15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 : proceedings, Volume II, September 20-24",
title = "Thermal characterization of polyurethane/silver ferrite nanocomposites",
pages = "483-486",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11682"
}

Pergal, M., Dojčinović, B., Kodranov, I., Ostojić, S., Ognjanović, M., Stanković, D.,& Antić, B.. (2021). Thermal characterization of polyurethane/silver ferrite nanocomposites. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 : proceedings, Volume II, September 20-24
The Society of Physical Chemists of Serbia., 483-486.
https://hdl.handle.net/21.15107/rcub_vinar_11682

Pergal M, Dojčinović B, Kodranov I, Ostojić S, Ognjanović M, Stanković D, Antić B. Thermal characterization of polyurethane/silver ferrite nanocomposites. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 : proceedings, Volume II, September 20-24. 2021;:483-486.
https://hdl.handle.net/21.15107/rcub_vinar_11682 .

Pergal, Marija, Dojčinović, Biljana, Kodranov, Igor, Ostojić, Sanja, Ognjanović, Miloš, Stanković, Dalibor, Antić, Bratislav, "Thermal characterization of polyurethane/silver ferrite nanocomposites" in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 : proceedings, Volume II, September 20-24 (2021):483-486,
https://hdl.handle.net/21.15107/rcub_vinar_11682 .