Džunuzović, Enis S.

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  • Džunuzović, Enis S. (31)
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Author's Bibliography

Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study

Barbierikova, Zuzana; Dvoranova, Dana; Brezova, Vlasta; Džunuzović, Enis S.; Sredojević, Dušan; Lazić, Vesna M.; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Barbierikova, Zuzana
AU  - Dvoranova, Dana
AU  - Brezova, Vlasta
AU  - Džunuzović, Enis S.
AU  - Sredojević, Dušan
AU  - Lazić, Vesna M.
AU  - Nedeljković, Jovan
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925346719300503
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8044
AB  - The visible-light-responsive inorganic-organic hybrid was prepared by surface modification of commercial TiO2 powder (Degussa P25) with 4-chlorophenol (4-CP). The optical absorption of the hybrid material is red-shifted compared to unmodified TiO2 powder due to the surface charge transfer complex (CTC) formation. The experimental results are supported by the density functional theory (DFT) calculations of the corresponding model cluster. The calculated electronic excitation spectrum is in agreement with the measured reflection spectrum of surface-modified TiO2 powder with 4-CP. The paramagnetic species, generated in the unmodified and surface-modified TiO2 powders upon excitation with ultraviolet and visible light, were identified using low-temperature electron paramagnetic resonance (EPR) spectroscopy. The formation of trapped electrons (Ti(III) centers) and the persistent oxygen-centered organic radicals indicated the photoinduced electron transfer from the chemisorbed 4-chlorophenol to the conduction band of TiO2. © 2019 Elsevier B.V.
T2  - Optical Materials
T1  - Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study
VL  - 89
SP  - 237
EP  - 242
DO  - 10.1016/j.optmat.2019.01.027
ER  - 
@article{
author = "Barbierikova, Zuzana and Dvoranova, Dana and Brezova, Vlasta and Džunuzović, Enis S. and Sredojević, Dušan and Lazić, Vesna M. and Nedeljković, Jovan",
year = "2019",
abstract = "The visible-light-responsive inorganic-organic hybrid was prepared by surface modification of commercial TiO2 powder (Degussa P25) with 4-chlorophenol (4-CP). The optical absorption of the hybrid material is red-shifted compared to unmodified TiO2 powder due to the surface charge transfer complex (CTC) formation. The experimental results are supported by the density functional theory (DFT) calculations of the corresponding model cluster. The calculated electronic excitation spectrum is in agreement with the measured reflection spectrum of surface-modified TiO2 powder with 4-CP. The paramagnetic species, generated in the unmodified and surface-modified TiO2 powders upon excitation with ultraviolet and visible light, were identified using low-temperature electron paramagnetic resonance (EPR) spectroscopy. The formation of trapped electrons (Ti(III) centers) and the persistent oxygen-centered organic radicals indicated the photoinduced electron transfer from the chemisorbed 4-chlorophenol to the conduction band of TiO2. © 2019 Elsevier B.V.",
journal = "Optical Materials",
title = "Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study",
volume = "89",
pages = "237-242",
doi = "10.1016/j.optmat.2019.01.027"
}
Barbierikova, Z., Dvoranova, D., Brezova, V., Džunuzović, E. S., Sredojević, D., Lazić, V. M.,& Nedeljković, J.. (2019). Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study. in Optical Materials, 89, 237-242.
https://doi.org/10.1016/j.optmat.2019.01.027
Barbierikova Z, Dvoranova D, Brezova V, Džunuzović ES, Sredojević D, Lazić VM, Nedeljković J. Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study. in Optical Materials. 2019;89:237-242.
doi:10.1016/j.optmat.2019.01.027 .
Barbierikova, Zuzana, Dvoranova, Dana, Brezova, Vlasta, Džunuzović, Enis S., Sredojević, Dušan, Lazić, Vesna M., Nedeljković, Jovan, "Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study" in Optical Materials, 89 (2019):237-242,
https://doi.org/10.1016/j.optmat.2019.01.027 . .
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Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer

Vukoje, Ivana D.; Džunuzović, Enis S.; Dimitrijević, Suzana I.; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis S.
AU  - Dimitrijević, Suzana I.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8449
AB  - Size-dependent antimicrobial ability of silver nanoparticles (Ag NPs) supported by amino-functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) macroporous copolymer was tested against Gram-negative bacteria Escherichia coli. Inorganic/organic hybrids with distinctly different average sizes of Ag NPs (6.6 and 12.1 nm) were prepared by functionalization of poly(GMA-co-EGDMA) with either 1,8-diaminooctane or ammonia, and consequent reduction of silver ions with amino groups. The transmission electron microscopy (TEM), infrared and UV–Vis reflection spectroscopy, elemental analysis, and inductively coupled plasma atomic emission measurements were used to characterize synthesized hybrid materials. Time- and concentration-dependent antimicrobial performances of prepared samples revealed higher reduction rates of E. coli when hybrid with smaller in size Ag NPs was used. The difference between rates of reduction of E. coli for different size Ag NPs is becoming more pronounced by decrease of the concentration of silver. POLYM. COMPOS., 2018. © 2018 Society of Plastics Engineers. © 2018 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer
VL  - 40
IS  - 7
SP  - 2901
EP  - 2907
DO  - 10.1002/pc.25120
ER  - 
@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis S. and Dimitrijević, Suzana I. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2019",
abstract = "Size-dependent antimicrobial ability of silver nanoparticles (Ag NPs) supported by amino-functionalized poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) macroporous copolymer was tested against Gram-negative bacteria Escherichia coli. Inorganic/organic hybrids with distinctly different average sizes of Ag NPs (6.6 and 12.1 nm) were prepared by functionalization of poly(GMA-co-EGDMA) with either 1,8-diaminooctane or ammonia, and consequent reduction of silver ions with amino groups. The transmission electron microscopy (TEM), infrared and UV–Vis reflection spectroscopy, elemental analysis, and inductively coupled plasma atomic emission measurements were used to characterize synthesized hybrid materials. Time- and concentration-dependent antimicrobial performances of prepared samples revealed higher reduction rates of E. coli when hybrid with smaller in size Ag NPs was used. The difference between rates of reduction of E. coli for different size Ag NPs is becoming more pronounced by decrease of the concentration of silver. POLYM. COMPOS., 2018. © 2018 Society of Plastics Engineers. © 2018 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer",
volume = "40",
number = "7",
pages = "2901-2907",
doi = "10.1002/pc.25120"
}
Vukoje, I. D., Džunuzović, E. S., Dimitrijević, S. I., Ahrenkiel, S. P.,& Nedeljković, J.. (2019). Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer. in Polymer Composites, 40(7), 2901-2907.
https://doi.org/10.1002/pc.25120
Vukoje ID, Džunuzović ES, Dimitrijević SI, Ahrenkiel SP, Nedeljković J. Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer. in Polymer Composites. 2019;40(7):2901-2907.
doi:10.1002/pc.25120 .
Vukoje, Ivana D., Džunuzović, Enis S., Dimitrijević, Suzana I., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Size‐dependent antibacterial properties of Ag nanoparticles supported by amino‐functionalized poly(GMA‐ co ‐EGDMA) polymer" in Polymer Composites, 40, no. 7 (2019):2901-2907,
https://doi.org/10.1002/pc.25120 . .
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Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles

Radoman, Tijana S.; Džunuzović, Jasna V.; Spasojević, Pavle M.; Marinović-Cincović, Milena; Jeremić, Katarina B.; Popović, Ivanka G.; Džunuzović, Enis S.

(2018)

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna V.
AU  - Spasojević, Pavle M.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Popović, Ivanka G.
AU  - Džunuzović, Enis S.
PY  - 2018
UR  - http://doi.wiley.com/10.1002/pc.24089
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7789
AB  - Alkyd resin/TiO2 nanocomposites (NC) were prepared from short oil alkyd resin and TiO2 nanoparticles (NPs) surface modified with in situ formed imine ligand, based on 3,4-dihydroxybenzaldehyde and oleylamine, or with three gallic acid esters. The short oil alkyd resin was synthesized from sunflower oil, phthalic anhydride, and trimethylolpropane. Unmodified and surface modified TiO2 NPs were examined by transmission electron microscopy. Rheological investigation revealed that prepared dispersions have higher dynamic viscosity than pure alkyd resin. Using different characterization methods it was obtained that NCs have similar thermooxidative stability as alkyd resin, lower glass transition temperature, better barrier properties, enhanced hardness, better chemical resistance, and lower adhesion to the metal, except in the case of NC prepared using TiO2 NPs surface modified with imine, which exhibited better adhesion to the metal than pure alkyd resin.
T2  - Polymer Composites
T1  - Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles
VL  - 39
IS  - 5
SP  - 1488
EP  - 1499
DO  - 10.1002/pc.24089
ER  - 
@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna V. and Spasojević, Pavle M. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Popović, Ivanka G. and Džunuzović, Enis S.",
year = "2018",
abstract = "Alkyd resin/TiO2 nanocomposites (NC) were prepared from short oil alkyd resin and TiO2 nanoparticles (NPs) surface modified with in situ formed imine ligand, based on 3,4-dihydroxybenzaldehyde and oleylamine, or with three gallic acid esters. The short oil alkyd resin was synthesized from sunflower oil, phthalic anhydride, and trimethylolpropane. Unmodified and surface modified TiO2 NPs were examined by transmission electron microscopy. Rheological investigation revealed that prepared dispersions have higher dynamic viscosity than pure alkyd resin. Using different characterization methods it was obtained that NCs have similar thermooxidative stability as alkyd resin, lower glass transition temperature, better barrier properties, enhanced hardness, better chemical resistance, and lower adhesion to the metal, except in the case of NC prepared using TiO2 NPs surface modified with imine, which exhibited better adhesion to the metal than pure alkyd resin.",
journal = "Polymer Composites",
title = "Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles",
volume = "39",
number = "5",
pages = "1488-1499",
doi = "10.1002/pc.24089"
}
Radoman, T. S., Džunuzović, J. V., Spasojević, P. M., Marinović-Cincović, M., Jeremić, K. B., Popović, I. G.,& Džunuzović, E. S.. (2018). Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles. in Polymer Composites, 39(5), 1488-1499.
https://doi.org/10.1002/pc.24089
Radoman TS, Džunuzović JV, Spasojević PM, Marinović-Cincović M, Jeremić KB, Popović IG, Džunuzović ES. Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles. in Polymer Composites. 2018;39(5):1488-1499.
doi:10.1002/pc.24089 .
Radoman, Tijana S., Džunuzović, Jasna V., Spasojević, Pavle M., Marinović-Cincović, Milena, Jeremić, Katarina B., Popović, Ivanka G., Džunuzović, Enis S., "Preparation and properties of short oil alkyd resin/TiO 2 nanocomposites based on surface modified TiO 2 nanoparticles" in Polymer Composites, 39, no. 5 (2018):1488-1499,
https://doi.org/10.1002/pc.24089 . .
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Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study

Kovač, Tijana S.; Džunuzović, Enis S.; Džunuzović, Jasna V.; Milićević, Bojana R.; Sredojević, Dušan; Brothers, Edward N.; Nedeljković, Jovan

(2018)

TY  - JOUR
AU  - Kovač, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Džunuzović, Jasna V.
AU  - Milićević, Bojana R.
AU  - Sredojević, Dušan
AU  - Brothers, Edward N.
AU  - Nedeljković, Jovan
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51391800044K
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7934
AB  - Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.
T2  - Journal of the Serbian Chemical Society
T1  - Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study
VL  - 83
IS  - 7-8
SP  - 899
EP  - 909
DO  - 10.2298/JSC180131044K
ER  - 
@article{
author = "Kovač, Tijana S. and Džunuzović, Enis S. and Džunuzović, Jasna V. and Milićević, Bojana R. and Sredojević, Dušan and Brothers, Edward N. and Nedeljković, Jovan",
year = "2018",
abstract = "Surface modification of titanium dioxide nanoparticles (TiO2 NPs) with the biologically active molecule pyridoxine hydrochloride (vitamin B-6) was found to alter the optical properties. Microstructural characterization involving transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis revealed that the anatase TiO2 NPs had a narrow size distribution with an average diameter of 45 angstrom. The absorption onset of the surface-modified TiO2 samples was red-shifted by about 0.4 eV compared to the unmodified particles. The mode of binding between vitamin B-6 and the surface Ti atoms was investigated by Fourier transform infrared spectroscopy (FTIR). From the Benesi-Hildebrand plot, the stability constant of the surface complex was found to be of the order 10(2) M-1. The experimental findings were supported by detailed quantum chemical calculations based on the density functional theory (DFT). Agreement was found between the experimentally measured absorption spectra of the TiO2 NPs surface-modified with vitamin B-6 and the theoretically calculated electronic excitation spectra of the corresponding model system.",
journal = "Journal of the Serbian Chemical Society",
title = "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study",
volume = "83",
number = "7-8",
pages = "899-909",
doi = "10.2298/JSC180131044K"
}
Kovač, T. S., Džunuzović, E. S., Džunuzović, J. V., Milićević, B. R., Sredojević, D., Brothers, E. N.,& Nedeljković, J.. (2018). Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society, 83(7-8), 899-909.
https://doi.org/10.2298/JSC180131044K
Kovač TS, Džunuzović ES, Džunuzović JV, Milićević BR, Sredojević D, Brothers EN, Nedeljković J. Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study. in Journal of the Serbian Chemical Society. 2018;83(7-8):899-909.
doi:10.2298/JSC180131044K .
Kovač, Tijana S., Džunuzović, Enis S., Džunuzović, Jasna V., Milićević, Bojana R., Sredojević, Dušan, Brothers, Edward N., Nedeljković, Jovan, "Visible light absorption of TiO2 nanoparticles surface-modified with vitamin B6: A comparative experimental and DFT study" in Journal of the Serbian Chemical Society, 83, no. 7-8 (2018):899-909,
https://doi.org/10.2298/JSC180131044K . .
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Influence of hematite nanorods on the mechanical properties of epoxy resin

Bogdanović, Gordana; Kovač, Tijana S.; Džunuzović, Enis S.; Spirkova, Milena; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2017)

TY  - JOUR
AU  - Bogdanović, Gordana
AU  - Kovač, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Spirkova, Milena
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1625
AB  - The mechanical properties of nanocomposites obtained by incorporation of fairly uniform hematite nanorods (alpha-Fe2O3 NRs) into epoxy resin were studied as a function of the content of the inorganic phase. A thorough microstructural characterization of the alpha-Fe2O3 NRs and the nanocomposites was performed using transmission electron microscopy (TEM) and atomic force microscopy (AFM). The TEM measurements revealed rod-like morphology of the nanofiller with a uniform size distribution (8.5 nmx170 nm, diameterxlength). High-magnification TEM and AFM measurements indicated agglomeration of alpha-Fe2O3 NRs embedded in the epoxy resin. Stress at break, strain at break, elastic modulus and tensile toughness of the nanocomposites were compared with the data obtained for pure epoxy resin. Significant influence of nanofiller on the mechanical properties of epoxy resin, as well as on the glass transition temperature, could be noticed for samples with low contents of the inorganic phase (up to 1 wt. %).
T2  - Journal of the Serbian Chemical Society
T1  - Influence of hematite nanorods on the mechanical properties of epoxy resin
VL  - 82
IS  - 4
SP  - 437
EP  - 447
DO  - 10.2298/JSC160707017B
ER  - 
@article{
author = "Bogdanović, Gordana and Kovač, Tijana S. and Džunuzović, Enis S. and Spirkova, Milena and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2017",
abstract = "The mechanical properties of nanocomposites obtained by incorporation of fairly uniform hematite nanorods (alpha-Fe2O3 NRs) into epoxy resin were studied as a function of the content of the inorganic phase. A thorough microstructural characterization of the alpha-Fe2O3 NRs and the nanocomposites was performed using transmission electron microscopy (TEM) and atomic force microscopy (AFM). The TEM measurements revealed rod-like morphology of the nanofiller with a uniform size distribution (8.5 nmx170 nm, diameterxlength). High-magnification TEM and AFM measurements indicated agglomeration of alpha-Fe2O3 NRs embedded in the epoxy resin. Stress at break, strain at break, elastic modulus and tensile toughness of the nanocomposites were compared with the data obtained for pure epoxy resin. Significant influence of nanofiller on the mechanical properties of epoxy resin, as well as on the glass transition temperature, could be noticed for samples with low contents of the inorganic phase (up to 1 wt. %).",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of hematite nanorods on the mechanical properties of epoxy resin",
volume = "82",
number = "4",
pages = "437-447",
doi = "10.2298/JSC160707017B"
}
Bogdanović, G., Kovač, T. S., Džunuzović, E. S., Spirkova, M., Ahrenkiel, S. P.,& Nedeljković, J.. (2017). Influence of hematite nanorods on the mechanical properties of epoxy resin. in Journal of the Serbian Chemical Society, 82(4), 437-447.
https://doi.org/10.2298/JSC160707017B
Bogdanović G, Kovač TS, Džunuzović ES, Spirkova M, Ahrenkiel SP, Nedeljković J. Influence of hematite nanorods on the mechanical properties of epoxy resin. in Journal of the Serbian Chemical Society. 2017;82(4):437-447.
doi:10.2298/JSC160707017B .
Bogdanović, Gordana, Kovač, Tijana S., Džunuzović, Enis S., Spirkova, Milena, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Influence of hematite nanorods on the mechanical properties of epoxy resin" in Journal of the Serbian Chemical Society, 82, no. 4 (2017):437-447,
https://doi.org/10.2298/JSC160707017B . .
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Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate

Rusmirović, Jelena D.; Radoman, Tijana S.; Džunuzović, Enis S.; Džunuzović, Jasna V.; Markovski, Jasmina S.; Spasojević, Pavle M.; Marinković, Aleksandar D.

(2017)

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Radoman, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Džunuzović, Jasna V.
AU  - Markovski, Jasmina S.
AU  - Spasojević, Pavle M.
AU  - Marinković, Aleksandar D.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1473
AB  - Unsaturated polyester resin (UPe)-based nanocomposites and fumed silica Aerosil R812S, R805 and R816, and R200 modified with phenyl terminal group, R200NPh, were prepared. UPe resins were synthesized from maleic anhydride and products of glycolysis, obtained by polyethylene terephthalate depolymerization with dipropylene glycol in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by acid, hydroxyl, and iodine values and by FTIR and NMR analysis. The microstructural analysis of the prepared nanocomposites, performed by using transmission electron microscopy, confirmed that silica nanoparticles formed chain-like aggregates in the polymer matrix. The presence of modified silica nanoparticles had no influence on the glass transition temperature and thermal stability of polyester matrix. The tensile modulus, stress at break, and hardness of cured products increased with increasing silica content. The impact strength of cured samples was not influenced by the silica content. (C) 2015 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate
VL  - 38
IS  - 3
SP  - 538
EP  - 554
DO  - 10.1002/pc.23613
ER  - 
@article{
author = "Rusmirović, Jelena D. and Radoman, Tijana S. and Džunuzović, Enis S. and Džunuzović, Jasna V. and Markovski, Jasmina S. and Spasojević, Pavle M. and Marinković, Aleksandar D.",
year = "2017",
abstract = "Unsaturated polyester resin (UPe)-based nanocomposites and fumed silica Aerosil R812S, R805 and R816, and R200 modified with phenyl terminal group, R200NPh, were prepared. UPe resins were synthesized from maleic anhydride and products of glycolysis, obtained by polyethylene terephthalate depolymerization with dipropylene glycol in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by acid, hydroxyl, and iodine values and by FTIR and NMR analysis. The microstructural analysis of the prepared nanocomposites, performed by using transmission electron microscopy, confirmed that silica nanoparticles formed chain-like aggregates in the polymer matrix. The presence of modified silica nanoparticles had no influence on the glass transition temperature and thermal stability of polyester matrix. The tensile modulus, stress at break, and hardness of cured products increased with increasing silica content. The impact strength of cured samples was not influenced by the silica content. (C) 2015 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate",
volume = "38",
number = "3",
pages = "538-554",
doi = "10.1002/pc.23613"
}
Rusmirović, J. D., Radoman, T. S., Džunuzović, E. S., Džunuzović, J. V., Markovski, J. S., Spasojević, P. M.,& Marinković, A. D.. (2017). Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate. in Polymer Composites, 38(3), 538-554.
https://doi.org/10.1002/pc.23613
Rusmirović JD, Radoman TS, Džunuzović ES, Džunuzović JV, Markovski JS, Spasojević PM, Marinković AD. Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate. in Polymer Composites. 2017;38(3):538-554.
doi:10.1002/pc.23613 .
Rusmirović, Jelena D., Radoman, Tijana S., Džunuzović, Enis S., Džunuzović, Jasna V., Markovski, Jasmina S., Spasojević, Pavle M., Marinković, Aleksandar D., "Effect of the Modified Silica Nanofiller on the Mechanical Properties of Unsaturated Polyester Resins Based on Recycled Polyethylene Terephthalate" in Polymer Composites, 38, no. 3 (2017):538-554,
https://doi.org/10.1002/pc.23613 . .
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Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study

Sredojević, Dušan; Kovač, Tijana S.; Džunuzović, Enis S.; Đorđević, Vesna R.; Grgur, Branimir N.; Nedeljković, Jovan

(2017)

TY  - JOUR
AU  - Sredojević, Dušan
AU  - Kovač, Tijana S.
AU  - Džunuzović, Enis S.
AU  - Đorđević, Vesna R.
AU  - Grgur, Branimir N.
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1724
AB  - The charge transfer complex formation between TiO2 powder and variety of phenol derivatives (phenol, 4-nitrophenol, 4-bromophenol, 4-tert-butylphenol, hydroquinone) was achieved. The red-shift of optical absorption was observed upon surface modification of TiO2 powders with phenol derivatives. The influence of substituent functional groups in para position on the optical band gap and conduction band edge of inorganic/organic hybrids was studied using reflection spectroscopy and cyclic voltammetry. The experimental findings were supported by density functional theory calculations. The measured reflection spectra of surface-modified TiO2 powders with phenol derivatives were compared with calculated electronic excitation spectra of corresponding model systems. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Chemical Physics Letters
T1  - Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study
VL  - 686
SP  - 167
EP  - 172
DO  - 10.1016/j.cplett.2017.08.023
ER  - 
@article{
author = "Sredojević, Dušan and Kovač, Tijana S. and Džunuzović, Enis S. and Đorđević, Vesna R. and Grgur, Branimir N. and Nedeljković, Jovan",
year = "2017",
abstract = "The charge transfer complex formation between TiO2 powder and variety of phenol derivatives (phenol, 4-nitrophenol, 4-bromophenol, 4-tert-butylphenol, hydroquinone) was achieved. The red-shift of optical absorption was observed upon surface modification of TiO2 powders with phenol derivatives. The influence of substituent functional groups in para position on the optical band gap and conduction band edge of inorganic/organic hybrids was studied using reflection spectroscopy and cyclic voltammetry. The experimental findings were supported by density functional theory calculations. The measured reflection spectra of surface-modified TiO2 powders with phenol derivatives were compared with calculated electronic excitation spectra of corresponding model systems. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Chemical Physics Letters",
title = "Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study",
volume = "686",
pages = "167-172",
doi = "10.1016/j.cplett.2017.08.023"
}
Sredojević, D., Kovač, T. S., Džunuzović, E. S., Đorđević, V. R., Grgur, B. N.,& Nedeljković, J.. (2017). Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study. in Chemical Physics Letters, 686, 167-172.
https://doi.org/10.1016/j.cplett.2017.08.023
Sredojević D, Kovač TS, Džunuzović ES, Đorđević VR, Grgur BN, Nedeljković J. Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study. in Chemical Physics Letters. 2017;686:167-172.
doi:10.1016/j.cplett.2017.08.023 .
Sredojević, Dušan, Kovač, Tijana S., Džunuzović, Enis S., Đorđević, Vesna R., Grgur, Branimir N., Nedeljković, Jovan, "Surface-modified TiO2 powders with phenol derivatives: A comparative DFT and experimental study" in Chemical Physics Letters, 686 (2017):167-172,
https://doi.org/10.1016/j.cplett.2017.08.023 . .
14
14
18

Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support

Vukoje, Ivana D.; Džunuzović, Enis S.; Lončarević, Davor; Dimitrijević, Suzana I.; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2017)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis S.
AU  - Lončarević, Davor
AU  - Dimitrijević, Suzana I.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1361
AB  - Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment. (C) 2015 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support
VL  - 38
IS  - 6
SP  - 1206
EP  - 1214
DO  - 10.1002/pc.23684
ER  - 
@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis S. and Lončarević, Davor and Dimitrijević, Suzana I. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2017",
abstract = "Poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA) macroporous copolymer decorated with silver nanoparticles was prepared by a modification of poly(GMA-co-EGDMA) in the reaction with arginine, and consequent reduction of silver ions with amino groups. The mercury intrusion porosimetry, transmission electron microscopy, X-ray diffraction, UV-vis reflection spectroscopy, and inductively coupled plasma atomic emission measurements were used to characterize obtained composite. The coordination of silver nanoparticles to the poly(GMA-co-EGDMA) copolymer was studied using infrared spectroscopy. Time dependence and concentration dependence of the antimicrobial efficiency of composite were tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungus Candida albicans. The composite ensured maximum reduction of both bacteria, while the fungi reduction reached satisfactory 96.8%. Preliminary antimicrobial efficiency measurements using laboratory flow setup indicated potential applicability of composite for wastewater treatment. (C) 2015 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support",
volume = "38",
number = "6",
pages = "1206-1214",
doi = "10.1002/pc.23684"
}
Vukoje, I. D., Džunuzović, E. S., Lončarević, D., Dimitrijević, S. I., Ahrenkiel, S. P.,& Nedeljković, J.. (2017). Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites, 38(6), 1206-1214.
https://doi.org/10.1002/pc.23684
Vukoje ID, Džunuzović ES, Lončarević D, Dimitrijević SI, Ahrenkiel SP, Nedeljković J. Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support. in Polymer Composites. 2017;38(6):1206-1214.
doi:10.1002/pc.23684 .
Vukoje, Ivana D., Džunuzović, Enis S., Lončarević, Davor, Dimitrijević, Suzana I., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Synthesis, Characterization, and Antimicrobial Activity of Silver Nanoparticles on Poly(GMA-co-EGDMA) Polymer Support" in Polymer Composites, 38, no. 6 (2017):1206-1214,
https://doi.org/10.1002/pc.23684 . .
14
12
14

Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6

Radoman, Tijana S.; Džunuzović, Jasna V.; Grgur, Branimir N.; Gvozdenovic, Milica M.; Jugović, Branimir Z.; Miličević, Dejan S.; Džunuzović, Enis S.

(2016)

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna V.
AU  - Grgur, Branimir N.
AU  - Gvozdenovic, Milica M.
AU  - Jugović, Branimir Z.
AU  - Miličević, Dejan S.
AU  - Džunuzović, Enis S.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1223
AB  - Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Progress in Organic Coatings
T1  - Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6
VL  - 99
SP  - 346
EP  - 355
DO  - 10.1016/j.porgcoat.2016.06.014
ER  - 
@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna V. and Grgur, Branimir N. and Gvozdenovic, Milica M. and Jugović, Branimir Z. and Miličević, Dejan S. and Džunuzović, Enis S.",
year = "2016",
abstract = "Novel TiO2-PANI core-shell nanocomposite, prepared by in situ oxidative polymerization of aniline in the presence of TiO2 nanoparticles surface modified with vitamin B6, was used to reinforce epoxy resin. The size of prepared TiO2 nanoparticles and TiO2-PANI nanocomposite were determined by a transmission electron microscopy (TEM). The surface modification of TiO2 nanoparticles was confirmed by FTIR and UV-vis spectroscopy, while the morphology of PANI and TiO2-PANI nanocomposite was investigated by scanning electron microscopy (SEM). The influence of TiO2-PANI nanocomposite on glass transition temperature, dielectric and dynamic mechanical properties, thermooxidative stability, mechanical and anticorrosion properties of epoxy based nanocomposites was investigated and compared to the properties of epoxy/PANI nanocomposites. It has been observed that the glass transition temperature of epoxy resin increases after introduction of PANI and TiO2-PANI nanocomposite, as well as with increasing their content. Prepared nanocomposites exhibited higher value of dielectric constant than pure epoxy resin. Epoxy based coating containing TiO2-PANI nanocomposite showed lower dielectric loss, higher hardness and better anticorrosion properties than pure epoxy resin and epoxy/PANI nanocomposite. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Progress in Organic Coatings",
title = "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6",
volume = "99",
pages = "346-355",
doi = "10.1016/j.porgcoat.2016.06.014"
}
Radoman, T. S., Džunuzović, J. V., Grgur, B. N., Gvozdenovic, M. M., Jugović, B. Z., Miličević, D. S.,& Džunuzović, E. S.. (2016). Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings, 99, 346-355.
https://doi.org/10.1016/j.porgcoat.2016.06.014
Radoman TS, Džunuzović JV, Grgur BN, Gvozdenovic MM, Jugović BZ, Miličević DS, Džunuzović ES. Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6. in Progress in Organic Coatings. 2016;99:346-355.
doi:10.1016/j.porgcoat.2016.06.014 .
Radoman, Tijana S., Džunuzović, Jasna V., Grgur, Branimir N., Gvozdenovic, Milica M., Jugović, Branimir Z., Miličević, Dejan S., Džunuzović, Enis S., "Improvement of the epoxy coating properties by incorporation of polyaniline surface treated TiO2 nanoparticles previously modified with vitamin B6" in Progress in Organic Coatings, 99 (2016):346-355,
https://doi.org/10.1016/j.porgcoat.2016.06.014 . .
20
18
20

Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles

Vukoje, Ivana D.; Kovač, Tijana S.; Džunuzović, Jasna V.; Džunuzović, Enis S.; Lončarević, Davor; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2016)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Kovač, Tijana S.
AU  - Džunuzović, Jasna V.
AU  - Džunuzović, Enis S.
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1221
AB  - The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.
T2  - Journal of Physical Chemistry. C
T1  - Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles
VL  - 120
IS  - 33
SP  - 18560
EP  - 18569
DO  - 10.1021/acs.jpcc.6b04293
ER  - 
@article{
author = "Vukoje, Ivana D. and Kovač, Tijana S. and Džunuzović, Jasna V. and Džunuzović, Enis S. and Lončarević, Davor and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2016",
abstract = "The synthetic procedures for preparation of free-standing and attached to polymer support surface modified TiO2 nanoparticles (NPs) with absorption extended into the visible spectral region due to charge transfer complex formation were developed. The one-step synthesis of colloids consisting of surface-modified TiO2 NPs is based on the reaction between titanium(IV) isopropoxide (TTIP) and lauryl galatte in nonprotic organic solvents (tetrahydrofuran, xylol, chloroform). The poly(GMA-co-EGDMA) copolymer decorated with surface-modified TiO2 NPs was obtained in two steps. First, copolymer was functionalized with dopamine and then treated with TTIP in organic solvent at slightly elevated temperature. Thorough microstructural and optical characterization of free-standing and attached to polymer support surface-modified TiO2 NPs was performed involving transmission electron microscopy as well as absorption and reflection spectroscopy. Infrared spectroscopy was used to understand coordination of ligands to surface Ti atoms. Photoredox chemistry of surface-modified TiO2 NPs attached to the polymer support was tested. Enhanced photooxidative ability of composite was demonstrated by degradation of organic dye crystal violet under visible light illumination, i.e., using photons with energy smaller than 2.75 eV. On the other hand, photocatalytic hydrogen production was used to demonstrate photoreduction ability of surface modified TiO2 NPs attached to the polymer support.",
journal = "Journal of Physical Chemistry. C",
title = "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles",
volume = "120",
number = "33",
pages = "18560-18569",
doi = "10.1021/acs.jpcc.6b04293"
}
Vukoje, I. D., Kovač, T. S., Džunuzović, J. V., Džunuzović, E. S., Lončarević, D., Ahrenkiel, S. P.,& Nedeljković, J.. (2016). Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry. C, 120(33), 18560-18569.
https://doi.org/10.1021/acs.jpcc.6b04293
Vukoje ID, Kovač TS, Džunuzović JV, Džunuzović ES, Lončarević D, Ahrenkiel SP, Nedeljković J. Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles. in Journal of Physical Chemistry. C. 2016;120(33):18560-18569.
doi:10.1021/acs.jpcc.6b04293 .
Vukoje, Ivana D., Kovač, Tijana S., Džunuzović, Jasna V., Džunuzović, Enis S., Lončarević, Davor, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Photocatalytic Ability of Visible-Light-Responsive TiO2 Nanoparticles" in Journal of Physical Chemistry. C, 120, no. 33 (2016):18560-18569,
https://doi.org/10.1021/acs.jpcc.6b04293 . .
28
27
27

Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization

Vukoje, Ivana D.; Vodnik, Vesna; Džunuzović, Jasna V.; Džunuzović, Enis S.; Marinović-Cincović, Milena; Jeremić, Katarina B.; Nedeljković, Jovan

(2014)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna V.
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5846
AB  - Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization
VL  - 49
SP  - 434
EP  - 439
DO  - 10.1016/j.materresbull.2013.09.029
ER  - 
@article{
author = "Vukoje, Ivana D. and Vodnik, Vesna and Džunuzović, Jasna V. and Džunuzović, Enis S. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2014",
abstract = "Nanocomposites (NCs) with different content of silver nanoparticles (Ag NPs) embeded in polystyrene (PS) matrix were prepared by in situ bulk radical polymerization. The nearly monodisperse Ag NPs protected with oleylamine were synthesized via organic solvo-thermal method and further used as a filler. The as-prepared spherical Ag NPs with diameter of 7.0 +/- 1.5 nm were well dispersed in the PS matrix. The structural properties of the resulting Ag/PS NCs were characterized by transmission electron microscope (TEM) and Fourier transform infrared (FTIR) spectroscopy, while optical properties were characterized using optical absorption measurements. The gel permeation chromatography (GPC) measurements showed that the presence of Ag NPs stabilized with oleylamine has no influence on the molecular weight and polydispersity of the PS matrix. The influence of silver content on the thermal properties of Ag/PS NCs was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that resistance of PS to thermal degradation was improved upon incorporation of Ag NPs. The Ag/PS NCs have lower glass transition temperatures than net PS because loosely packed oleylamine molecules at the interface caused the increase of free volume and chain segments mobility near the surface of Ag NPs. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization",
volume = "49",
pages = "434-439",
doi = "10.1016/j.materresbull.2013.09.029"
}
Vukoje, I. D., Vodnik, V., Džunuzović, J. V., Džunuzović, E. S., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2014). Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin, 49, 434-439.
https://doi.org/10.1016/j.materresbull.2013.09.029
Vukoje ID, Vodnik V, Džunuzović JV, Džunuzović ES, Marinović-Cincović M, Jeremić KB, Nedeljković J. Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization. in Materials Research Bulletin. 2014;49:434-439.
doi:10.1016/j.materresbull.2013.09.029 .
Vukoje, Ivana D., Vodnik, Vesna, Džunuzović, Jasna V., Džunuzović, Enis S., Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization" in Materials Research Bulletin, 49 (2014):434-439,
https://doi.org/10.1016/j.materresbull.2013.09.029 . .
18
15
17

Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles

Vukoje, Ivana D.; Džunuzović, Enis S.; Vodnik, Vesna; Dimitrijević, Suzana I.; Ahrenkiel, Scott Phillip; Nedeljković, Jovan

(2014)

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis S.
AU  - Vodnik, Vesna
AU  - Dimitrijević, Suzana I.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6079
AB  - Composite consisting of silver nanoparticles coordinated to poly(GMA-co-EGDMA) macroporous copolymer was prepared by attachment of amino group to the poly(GMA-co-EGDMA) in the reaction with ethylene diamine, and consequent reduction of silver ions with amino groups at elevated temperature. The infrared measurements indicated that surface of silver nanoparticles is passivated through the coordination of the lone pair on the N atom of the imine present in the skeleton of the poly(GMA-co-EGDMA) copolymer. The inductively coupled plasma atomic emission, UV-Vis reflection spectroscopy, X-ray diffraction, and transmission electron microscopy measurements revealed the high content (52 wt%) of well-separated silver nanoparticles in the size range of 5-10 nm onto composite. Antimicrobial efficiency of composite was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus, and fungus C. albicans in wide concentration range of composite. The composite ensured almost maximum reduction of both bacteria, while the fungi reduction reached 96.5 %.
T2  - Journal of Materials Science
T1  - Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles
VL  - 49
IS  - 19
SP  - 6838
EP  - 6844
DO  - 10.1007/s10853-014-8386-x
ER  - 
@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis S. and Vodnik, Vesna and Dimitrijević, Suzana I. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2014",
abstract = "Composite consisting of silver nanoparticles coordinated to poly(GMA-co-EGDMA) macroporous copolymer was prepared by attachment of amino group to the poly(GMA-co-EGDMA) in the reaction with ethylene diamine, and consequent reduction of silver ions with amino groups at elevated temperature. The infrared measurements indicated that surface of silver nanoparticles is passivated through the coordination of the lone pair on the N atom of the imine present in the skeleton of the poly(GMA-co-EGDMA) copolymer. The inductively coupled plasma atomic emission, UV-Vis reflection spectroscopy, X-ray diffraction, and transmission electron microscopy measurements revealed the high content (52 wt%) of well-separated silver nanoparticles in the size range of 5-10 nm onto composite. Antimicrobial efficiency of composite was tested against Gram-negative bacteria E. coli, Gram-positive bacteria S. aureus, and fungus C. albicans in wide concentration range of composite. The composite ensured almost maximum reduction of both bacteria, while the fungi reduction reached 96.5 %.",
journal = "Journal of Materials Science",
title = "Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles",
volume = "49",
number = "19",
pages = "6838-6844",
doi = "10.1007/s10853-014-8386-x"
}
Vukoje, I. D., Džunuzović, E. S., Vodnik, V., Dimitrijević, S. I., Ahrenkiel, S. P.,& Nedeljković, J.. (2014). Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles. in Journal of Materials Science, 49(19), 6838-6844.
https://doi.org/10.1007/s10853-014-8386-x
Vukoje ID, Džunuzović ES, Vodnik V, Dimitrijević SI, Ahrenkiel SP, Nedeljković J. Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles. in Journal of Materials Science. 2014;49(19):6838-6844.
doi:10.1007/s10853-014-8386-x .
Vukoje, Ivana D., Džunuzović, Enis S., Vodnik, Vesna, Dimitrijević, Suzana I., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles" in Journal of Materials Science, 49, no. 19 (2014):6838-6844,
https://doi.org/10.1007/s10853-014-8386-x . .
23
22
22

Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters

Radoman, Tijana S.; Džunuzović, Jasna V.; Jeremić, Katarina B.; Grgur, Branimir N.; Miličević, Dejan S.; Popović, Ivanka G.; Džunuzović, Enis S.

(2014)

TY  - JOUR
AU  - Radoman, Tijana S.
AU  - Džunuzović, Jasna V.
AU  - Jeremić, Katarina B.
AU  - Grgur, Branimir N.
AU  - Miličević, Dejan S.
AU  - Popović, Ivanka G.
AU  - Džunuzović, Enis S.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6098
AB  - Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Materials and Design
T1  - Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters
VL  - 62
SP  - 158
EP  - 167
DO  - 10.1016/j.matdes.2014.05.015
ER  - 
@article{
author = "Radoman, Tijana S. and Džunuzović, Jasna V. and Jeremić, Katarina B. and Grgur, Branimir N. and Miličević, Dejan S. and Popović, Ivanka G. and Džunuzović, Enis S.",
year = "2014",
abstract = "Epoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Materials and Design",
title = "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters",
volume = "62",
pages = "158-167",
doi = "10.1016/j.matdes.2014.05.015"
}
Radoman, T. S., Džunuzović, J. V., Jeremić, K. B., Grgur, B. N., Miličević, D. S., Popović, I. G.,& Džunuzović, E. S.. (2014). Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials and Design, 62, 158-167.
https://doi.org/10.1016/j.matdes.2014.05.015
Radoman TS, Džunuzović JV, Jeremić KB, Grgur BN, Miličević DS, Popović IG, Džunuzović ES. Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters. in Materials and Design. 2014;62:158-167.
doi:10.1016/j.matdes.2014.05.015 .
Radoman, Tijana S., Džunuzović, Jasna V., Jeremić, Katarina B., Grgur, Branimir N., Miličević, Dejan S., Popović, Ivanka G., Džunuzović, Enis S., "Improvement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid esters" in Materials and Design, 62 (2014):158-167,
https://doi.org/10.1016/j.matdes.2014.05.015 . .
1
78
76
86

Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length

Džunuzović, Enis S.; Džunuzović, Jasna V.; Radoman, Tijana S.; Marinović-Cincović, Milena; Nikolic, Ljubisa B.; Jeremić, Katarina B.; Nedeljković, Jovan

(2013)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Džunuzović, Jasna V.
AU  - Radoman, Tijana S.
AU  - Marinović-Cincović, Milena
AU  - Nikolic, Ljubisa B.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5322
AB  - Incorporation of surface modified TiO2 nanoparticles into polystyrene (PS) matrix was achieved by in situ bulk radical polymerization of styrene. The surface of TiO2 nanoparticles was modified with four amphiphilic esters of the gallic acid (octyl, decyl, lauryl and cetyl gallate), which have different lengths of hydrophobic alkyl chain (C8C16). FTIR and UV-Vis spectroscopy measurements confirmed the formation of a charge transfer complex between surface Ti atoms and gallic esters. Microstructural characterization of the synthesized nanocomposites revealed that the best dispersion of TiO2 nanoparticles in PS was achieved when the TiO2 surface was modified with octyl gallate. The presence of surface modified TiO2 nanoparticles by different alkyl gallates does not have an influence on the molecular weight and glass transition temperature of PS matrix. On the other hand, thermal and thermo-oxidative stability of PS were significantly improved by incorporation of surface modified TiO2 nanoparticles. The most pronounced improvement of thermal and thermo-oxidative stability was observed for TiO2 nanoparticles surface modified with octyl gallate. POLYM. COMPOS., 2013. (c) 2013 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length
VL  - 34
IS  - 3
SP  - 399
EP  - 407
DO  - 10.1002/pc.22423
ER  - 
@article{
author = "Džunuzović, Enis S. and Džunuzović, Jasna V. and Radoman, Tijana S. and Marinović-Cincović, Milena and Nikolic, Ljubisa B. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2013",
abstract = "Incorporation of surface modified TiO2 nanoparticles into polystyrene (PS) matrix was achieved by in situ bulk radical polymerization of styrene. The surface of TiO2 nanoparticles was modified with four amphiphilic esters of the gallic acid (octyl, decyl, lauryl and cetyl gallate), which have different lengths of hydrophobic alkyl chain (C8C16). FTIR and UV-Vis spectroscopy measurements confirmed the formation of a charge transfer complex between surface Ti atoms and gallic esters. Microstructural characterization of the synthesized nanocomposites revealed that the best dispersion of TiO2 nanoparticles in PS was achieved when the TiO2 surface was modified with octyl gallate. The presence of surface modified TiO2 nanoparticles by different alkyl gallates does not have an influence on the molecular weight and glass transition temperature of PS matrix. On the other hand, thermal and thermo-oxidative stability of PS were significantly improved by incorporation of surface modified TiO2 nanoparticles. The most pronounced improvement of thermal and thermo-oxidative stability was observed for TiO2 nanoparticles surface modified with octyl gallate. POLYM. COMPOS., 2013. (c) 2013 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length",
volume = "34",
number = "3",
pages = "399-407",
doi = "10.1002/pc.22423"
}
Džunuzović, E. S., Džunuzović, J. V., Radoman, T. S., Marinović-Cincović, M., Nikolic, L. B., Jeremić, K. B.,& Nedeljković, J.. (2013). Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length. in Polymer Composites, 34(3), 399-407.
https://doi.org/10.1002/pc.22423
Džunuzović ES, Džunuzović JV, Radoman TS, Marinović-Cincović M, Nikolic LB, Jeremić KB, Nedeljković J. Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length. in Polymer Composites. 2013;34(3):399-407.
doi:10.1002/pc.22423 .
Džunuzović, Enis S., Džunuzović, Jasna V., Radoman, Tijana S., Marinović-Cincović, Milena, Nikolic, Ljubisa B., Jeremić, Katarina B., Nedeljković, Jovan, "Characterization of in situ prepared nanocomposites of PS and TIO2 nanoparticles surface modified with alkyl gallates: Effect of alkyl chain length" in Polymer Composites, 34, no. 3 (2013):399-407,
https://doi.org/10.1002/pc.22423 . .
11
10
12

Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites

Džunuzović, Enis S.; Džunuzović, Jasna V.; Marinković, Aleksandar D.; Marinović-Cincović, Milena; Jeremić, Katarina B.; Nedeljković, Jovan

(2012)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Džunuzović, Jasna V.
AU  - Marinković, Aleksandar D.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5206
AB  - Nanocomposites based on poly(methyl methacrylate) (PMMA) and TiO2 nanoparticles were synthesized by in situ radical polymerization of MMA in solution. The surface of TiO2 nanoparticles was modified with four gallic acid esters (octyl, decyl, lauryl and cetyl gallate). The content of gallates present on the surface of TiO2, was calculated from the TGA results. The influence of length of hydrophobic tail of amphiphilic alkyl gallates on dispersability of surface modified TiO2 nanoparticles in PMMA matrix, the molecular weight and glass transition temperature of PMMA, as well as the thermal stability of the prepared PMMA/TiO2 nanocomposites in nitrogen and air was investigated. The influence of content of TiO2 nanoparticles on the properties of these nanocomposites was also examined. The formation of a charge transfer complex between the surface Ti atoms and the gallates was confirmed by FTIR and LIN/spectroscopy. TEM micrographs of the PMMA/TiO2 nanocomposites revealed that degree of TiO2 aggregation can be significantly lowered by increasing the length of aliphatic part of the used gallates. The molecular weight of PMMA slightly decreases with the increase of TiO2 content, indicating that used TiO2 nanoparticles act as radical scavengers during the polymerization of MMA. The presence of surface modified TiO2 nanoparticles do not have an influence on the mobility of PMMA chain segments leading to the same values of glass transition temperature for all investigated samples. Thermal and thermo-oxidative stability of the PMMA matrix are improved by introducing TiO2 nanoparticles modified with gallates. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - European Polymer Journal
T1  - Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites
VL  - 48
IS  - 8
SP  - 1385
EP  - 1393
DO  - 10.1016/j.eurpolymj.2012.05.017
ER  - 
@article{
author = "Džunuzović, Enis S. and Džunuzović, Jasna V. and Marinković, Aleksandar D. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2012",
abstract = "Nanocomposites based on poly(methyl methacrylate) (PMMA) and TiO2 nanoparticles were synthesized by in situ radical polymerization of MMA in solution. The surface of TiO2 nanoparticles was modified with four gallic acid esters (octyl, decyl, lauryl and cetyl gallate). The content of gallates present on the surface of TiO2, was calculated from the TGA results. The influence of length of hydrophobic tail of amphiphilic alkyl gallates on dispersability of surface modified TiO2 nanoparticles in PMMA matrix, the molecular weight and glass transition temperature of PMMA, as well as the thermal stability of the prepared PMMA/TiO2 nanocomposites in nitrogen and air was investigated. The influence of content of TiO2 nanoparticles on the properties of these nanocomposites was also examined. The formation of a charge transfer complex between the surface Ti atoms and the gallates was confirmed by FTIR and LIN/spectroscopy. TEM micrographs of the PMMA/TiO2 nanocomposites revealed that degree of TiO2 aggregation can be significantly lowered by increasing the length of aliphatic part of the used gallates. The molecular weight of PMMA slightly decreases with the increase of TiO2 content, indicating that used TiO2 nanoparticles act as radical scavengers during the polymerization of MMA. The presence of surface modified TiO2 nanoparticles do not have an influence on the mobility of PMMA chain segments leading to the same values of glass transition temperature for all investigated samples. Thermal and thermo-oxidative stability of the PMMA matrix are improved by introducing TiO2 nanoparticles modified with gallates. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "European Polymer Journal",
title = "Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites",
volume = "48",
number = "8",
pages = "1385-1393",
doi = "10.1016/j.eurpolymj.2012.05.017"
}
Džunuzović, E. S., Džunuzović, J. V., Marinković, A. D., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2012). Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites. in European Polymer Journal, 48(8), 1385-1393.
https://doi.org/10.1016/j.eurpolymj.2012.05.017
Džunuzović ES, Džunuzović JV, Marinković AD, Marinović-Cincović M, Jeremić KB, Nedeljković J. Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites. in European Polymer Journal. 2012;48(8):1385-1393.
doi:10.1016/j.eurpolymj.2012.05.017 .
Džunuzović, Enis S., Džunuzović, Jasna V., Marinković, Aleksandar D., Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Influence of surface modified TiO2 nanoparticles by gallates on the properties of PMMA/TiO2 nanocomposites" in European Polymer Journal, 48, no. 8 (2012):1385-1393,
https://doi.org/10.1016/j.eurpolymj.2012.05.017 . .
36
36
41

Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites

Pandis, Ch.; Logakis, E.; Kyritsis, A.; Pissis, P.; Vodnik, Vesna; Džunuzović, Enis S.; Nedeljković, Jovan; Đoković, Vladimir; Rodriguez Hernandez, J. C.; Gomez Ribelles, J. L.

(2011)

TY  - JOUR
AU  - Pandis, Ch.
AU  - Logakis, E.
AU  - Kyritsis, A.
AU  - Pissis, P.
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis S.
AU  - Nedeljković, Jovan
AU  - Đoković, Vladimir
AU  - Rodriguez Hernandez, J. C.
AU  - Gomez Ribelles, J. L.
PY  - 2011
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4453
AB  - Dynamic mechanical-thermal analysis (DMTA), differential scanning calorimetry (DSC), thermally stimulated depolarization currents (TSDC) and, mainly, broadband dielectric relaxation spectroscopy (DRS) were employed to investigate in detail glass transition and polymer dynamics in silver/poly(methyl methacrylate) (Ag/PMMA) nanocomposites. The nanocomposites were prepared by radical polymerization of MMA in the presence of surface modified Ag nanoparticles with a mean diameter of 5.6 nm dispersed in chloroform. The fraction of Ag nanoparticles in the final materials was varied between 0 and 0.5 wt%, the latter corresponding to 0.055 vol%. The results show that the nanoparticles have practically no effect on the time scale of the secondary beta and gamma relaxations, whereas the magnitude of both increases slightly but systematically with increasing filler content. The segmental alpha relaxation, associated with the glass transition, becomes systematically faster and stronger in the nanocomposites. The glass transition temperature T(g) decreases with increasing filler content of the nanocomposites up to about 10 degrees C. in good correlation by the four techniques employed. Finally, the elastic modulus decreases slightly but systematically in the nanocomposites, both in the glassy and in the rubbery state. The results are explained in terms of plasticization of the PMMA matrix, due to constraints imposed to packing of the chains by the Ag nanoparticles, and, at the same time, of the absence of strong polymer-filler interactions, due to the surface modification of the Ag nanoparticles by oleylamine at the stage of preparation. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - European Polymer Journal
T1  - Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites
VL  - 47
IS  - 8
SP  - 1514
EP  - 1525
DO  - 10.1016/j.eurpolymj.2011.06.001
ER  - 
@article{
author = "Pandis, Ch. and Logakis, E. and Kyritsis, A. and Pissis, P. and Vodnik, Vesna and Džunuzović, Enis S. and Nedeljković, Jovan and Đoković, Vladimir and Rodriguez Hernandez, J. C. and Gomez Ribelles, J. L.",
year = "2011",
abstract = "Dynamic mechanical-thermal analysis (DMTA), differential scanning calorimetry (DSC), thermally stimulated depolarization currents (TSDC) and, mainly, broadband dielectric relaxation spectroscopy (DRS) were employed to investigate in detail glass transition and polymer dynamics in silver/poly(methyl methacrylate) (Ag/PMMA) nanocomposites. The nanocomposites were prepared by radical polymerization of MMA in the presence of surface modified Ag nanoparticles with a mean diameter of 5.6 nm dispersed in chloroform. The fraction of Ag nanoparticles in the final materials was varied between 0 and 0.5 wt%, the latter corresponding to 0.055 vol%. The results show that the nanoparticles have practically no effect on the time scale of the secondary beta and gamma relaxations, whereas the magnitude of both increases slightly but systematically with increasing filler content. The segmental alpha relaxation, associated with the glass transition, becomes systematically faster and stronger in the nanocomposites. The glass transition temperature T(g) decreases with increasing filler content of the nanocomposites up to about 10 degrees C. in good correlation by the four techniques employed. Finally, the elastic modulus decreases slightly but systematically in the nanocomposites, both in the glassy and in the rubbery state. The results are explained in terms of plasticization of the PMMA matrix, due to constraints imposed to packing of the chains by the Ag nanoparticles, and, at the same time, of the absence of strong polymer-filler interactions, due to the surface modification of the Ag nanoparticles by oleylamine at the stage of preparation. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "European Polymer Journal",
title = "Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites",
volume = "47",
number = "8",
pages = "1514-1525",
doi = "10.1016/j.eurpolymj.2011.06.001"
}
Pandis, Ch., Logakis, E., Kyritsis, A., Pissis, P., Vodnik, V., Džunuzović, E. S., Nedeljković, J., Đoković, V., Rodriguez Hernandez, J. C.,& Gomez Ribelles, J. L.. (2011). Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites. in European Polymer Journal, 47(8), 1514-1525.
https://doi.org/10.1016/j.eurpolymj.2011.06.001
Pandis C, Logakis E, Kyritsis A, Pissis P, Vodnik V, Džunuzović ES, Nedeljković J, Đoković V, Rodriguez Hernandez JC, Gomez Ribelles JL. Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites. in European Polymer Journal. 2011;47(8):1514-1525.
doi:10.1016/j.eurpolymj.2011.06.001 .
Pandis, Ch., Logakis, E., Kyritsis, A., Pissis, P., Vodnik, Vesna, Džunuzović, Enis S., Nedeljković, Jovan, Đoković, Vladimir, Rodriguez Hernandez, J. C., Gomez Ribelles, J. L., "Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites" in European Polymer Journal, 47, no. 8 (2011):1514-1525,
https://doi.org/10.1016/j.eurpolymj.2011.06.001 . .
29
28
30

Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites

Džunuzović, Enis S.; Marinović-Cincović, Milena; Džunuzović, Jasna V.; Jeremić, Katarina B.; Nedeljković, Jovan

(2010)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Džunuzović, Jasna V.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4221
AB  - Incorporation of inorganic nanoparticles can significantly affect the properties of the polymer matrix. The properties of polymer nanocomposites depend on the type of incorporated nanoparticles, their size and shape, their concentration, and interactions with the polymer matrix. Homogeneity of polymer nanocomposites is influenced very much by the preparation method. In this study, TiO2 nanoparticles surface modified with 6-palmitate ascorbic acid (6-PAA) were encapsulated in poly(methyl methacrylate) (PMMA) by in situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile (AIBN). The surface modification of the TiO2 nanoparticles was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The radical polymerization of MMA in the presence of TiO2-PAA nanoparticles was conducted in solution (PMMA/TiO2-PAA-R), in bulk (PMMA/TiO2-PAA-M) or in suspension (PMMA/TiO2-PAA-S). The main purpose of this study was to investigate the influence of the preparation method on the molar masses and thermal properties of PMMA/TiO2-PAA nanocomposite. It was obtained that molar masses of PMMA extracted from the composites had smaller values compared to molar masses of pure PMMA synthesized in the same manner, which indicated that TiO2-PAA nanoparticles affected the reaction of termination. Thermal properties were investigated by DSC and TGA. The values of glass transition temperature, T-g, were influenced by the way the radical polymerization was conducted, even in the case of the pure PMMA. The Tp(g) of composite samples was always smaller than the value of the corresponding PMMA sample and the smallest value was obtained for PMMA/TiO2- PAA-M since they contained the largest amount of low molar mass residue. The TGA results showed that thermal and thermooxidative stability of polymer composites obtained in solution and in suspension was better than for the pure PMMA obtained in the same way.
T2  - Hemijska industrija
T1  - Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites
VL  - 64
IS  - 6
SP  - 473
EP  - 489
DO  - 10.2298/HEMIND100923059D
ER  - 
@article{
author = "Džunuzović, Enis S. and Marinović-Cincović, Milena and Džunuzović, Jasna V. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2010",
abstract = "Incorporation of inorganic nanoparticles can significantly affect the properties of the polymer matrix. The properties of polymer nanocomposites depend on the type of incorporated nanoparticles, their size and shape, their concentration, and interactions with the polymer matrix. Homogeneity of polymer nanocomposites is influenced very much by the preparation method. In this study, TiO2 nanoparticles surface modified with 6-palmitate ascorbic acid (6-PAA) were encapsulated in poly(methyl methacrylate) (PMMA) by in situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile (AIBN). The surface modification of the TiO2 nanoparticles was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The radical polymerization of MMA in the presence of TiO2-PAA nanoparticles was conducted in solution (PMMA/TiO2-PAA-R), in bulk (PMMA/TiO2-PAA-M) or in suspension (PMMA/TiO2-PAA-S). The main purpose of this study was to investigate the influence of the preparation method on the molar masses and thermal properties of PMMA/TiO2-PAA nanocomposite. It was obtained that molar masses of PMMA extracted from the composites had smaller values compared to molar masses of pure PMMA synthesized in the same manner, which indicated that TiO2-PAA nanoparticles affected the reaction of termination. Thermal properties were investigated by DSC and TGA. The values of glass transition temperature, T-g, were influenced by the way the radical polymerization was conducted, even in the case of the pure PMMA. The Tp(g) of composite samples was always smaller than the value of the corresponding PMMA sample and the smallest value was obtained for PMMA/TiO2- PAA-M since they contained the largest amount of low molar mass residue. The TGA results showed that thermal and thermooxidative stability of polymer composites obtained in solution and in suspension was better than for the pure PMMA obtained in the same way.",
journal = "Hemijska industrija",
title = "Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites",
volume = "64",
number = "6",
pages = "473-489",
doi = "10.2298/HEMIND100923059D"
}
Džunuzović, E. S., Marinović-Cincović, M., Džunuzović, J. V., Jeremić, K. B.,& Nedeljković, J.. (2010). Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites. in Hemijska industrija, 64(6), 473-489.
https://doi.org/10.2298/HEMIND100923059D
Džunuzović ES, Marinović-Cincović M, Džunuzović JV, Jeremić KB, Nedeljković J. Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites. in Hemijska industrija. 2010;64(6):473-489.
doi:10.2298/HEMIND100923059D .
Džunuzović, Enis S., Marinović-Cincović, Milena, Džunuzović, Jasna V., Jeremić, Katarina B., Nedeljković, Jovan, "Influence of the Way of Synthesis of Poly(Methyl Methacrylate) in the Presence of Surface Modified Tio2 Nanoparticles on the Properties of Obtained Nanocomposites" in Hemijska industrija, 64, no. 6 (2010):473-489,
https://doi.org/10.2298/HEMIND100923059D . .
5
3
6

Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization

Vodnik, Vesna; Božanić, Dušan K.; Džunuzović, Enis S.; Vuković, Jasna V.; Nedeljković, Jovan

(2010)

TY  - JOUR
AU  - Vodnik, Vesna
AU  - Božanić, Dušan K.
AU  - Džunuzović, Enis S.
AU  - Vuković, Jasna V.
AU  - Nedeljković, Jovan
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3916
AB  - Surface modified silver nanoparticles dispersed in chloroform were encapsulated in poly(methylmethacrylate) (PMMA) by in-situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile. The particle size distribution of colloidal silver nanoparticles was determined using transmission electron microscopy. The obtained transparent nanocomposite films were characterized using UV-vis spectroscopy, (1)H NMR spectroscopy and gel permeation chromatography. Effective medium Maxwell-Garnett theory was used in order to explain optical properties of nanocomposite films taking into account inhomogeneous spatial distribution of silver nanoparticles in PMMA matrix. The influence of the silver nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. Thermo-oxidative stability of the PMMA in the presence of low content of inorganic phase is significantly improved. The glass transition temperatures of nanocomposites are slightly lower compared to the pure polymer. (C) 2009 Elsevier Ltd. All rights reserved.
T2  - European Polymer Journal
T1  - Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization
VL  - 46
IS  - 2
SP  - 137
EP  - 144
DO  - 10.1016/j.eurpolymj.2009.10.022
ER  - 
@article{
author = "Vodnik, Vesna and Božanić, Dušan K. and Džunuzović, Enis S. and Vuković, Jasna V. and Nedeljković, Jovan",
year = "2010",
abstract = "Surface modified silver nanoparticles dispersed in chloroform were encapsulated in poly(methylmethacrylate) (PMMA) by in-situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile. The particle size distribution of colloidal silver nanoparticles was determined using transmission electron microscopy. The obtained transparent nanocomposite films were characterized using UV-vis spectroscopy, (1)H NMR spectroscopy and gel permeation chromatography. Effective medium Maxwell-Garnett theory was used in order to explain optical properties of nanocomposite films taking into account inhomogeneous spatial distribution of silver nanoparticles in PMMA matrix. The influence of the silver nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. Thermo-oxidative stability of the PMMA in the presence of low content of inorganic phase is significantly improved. The glass transition temperatures of nanocomposites are slightly lower compared to the pure polymer. (C) 2009 Elsevier Ltd. All rights reserved.",
journal = "European Polymer Journal",
title = "Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization",
volume = "46",
number = "2",
pages = "137-144",
doi = "10.1016/j.eurpolymj.2009.10.022"
}
Vodnik, V., Božanić, D. K., Džunuzović, E. S., Vuković, J. V.,& Nedeljković, J.. (2010). Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization. in European Polymer Journal, 46(2), 137-144.
https://doi.org/10.1016/j.eurpolymj.2009.10.022
Vodnik V, Božanić DK, Džunuzović ES, Vuković JV, Nedeljković J. Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization. in European Polymer Journal. 2010;46(2):137-144.
doi:10.1016/j.eurpolymj.2009.10.022 .
Vodnik, Vesna, Božanić, Dušan K., Džunuzović, Enis S., Vuković, Jasna V., Nedeljković, Jovan, "Thermal and optical properties of silver-poly(methylmethacrylate) nanocomposites prepared by in-situ radical polymerization" in European Polymer Journal, 46, no. 2 (2010):137-144,
https://doi.org/10.1016/j.eurpolymj.2009.10.022 . .
3
42
46
47

New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands

Janković, Ivana A.; Šaponjić, Zoran; Džunuzović, Enis S.; Nedeljković, Jovan

(2010)

TY  - JOUR
AU  - Janković, Ivana A.
AU  - Šaponjić, Zoran
AU  - Džunuzović, Enis S.
AU  - Nedeljković, Jovan
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3853
AB  - Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.
T2  - Nanoscale Research Letters
T1  - New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands
VL  - 5
IS  - 1
SP  - 81
EP  - 88
DO  - 10.1007/s11671-009-9447-y
ER  - 
@article{
author = "Janković, Ivana A. and Šaponjić, Zoran and Džunuzović, Enis S. and Nedeljković, Jovan",
year = "2010",
abstract = "Surface modification of nanocrystalline TiO2 particles (45 ) with bidentate benzene derivatives (catechol, pyrogallol, and gallic acid) was found to alter optical properties of nanoparticles. The formation of the inner-sphere charge-transfer complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites. The binding structures were investigated by using FTIR spectroscopy. The investigated ligands have the optimal geometry for chelating surface Ti atoms, resulting in ring coordination complexes (catecholate type of binuclear bidentate binding-bridging) thus restoring in six-coordinated octahedral geometry of surface Ti atoms. From the Benesi-Hildebrand plot, the stability constants at pH 2 of the order 10(3) M-1 have been determined.",
journal = "Nanoscale Research Letters",
title = "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands",
volume = "5",
number = "1",
pages = "81-88",
doi = "10.1007/s11671-009-9447-y"
}
Janković, I. A., Šaponjić, Z., Džunuzović, E. S.,& Nedeljković, J.. (2010). New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters, 5(1), 81-88.
https://doi.org/10.1007/s11671-009-9447-y
Janković IA, Šaponjić Z, Džunuzović ES, Nedeljković J. New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands. in Nanoscale Research Letters. 2010;5(1):81-88.
doi:10.1007/s11671-009-9447-y .
Janković, Ivana A., Šaponjić, Zoran, Džunuzović, Enis S., Nedeljković, Jovan, "New Hybrid Properties of TiO2 Nanoparticles Surface Modified With Catecholate Type Ligands" in Nanoscale Research Letters, 5, no. 1 (2010):81-88,
https://doi.org/10.1007/s11671-009-9447-y . .
3
88
85
86

Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization

Džunuzović, Enis S.; Marinović-Cincović, Milena; Jeremić, Katarina B.; Nedeljković, Jovan

(2009)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3677
AB  - Poly(methyl methacrylate)/alpha-Fe2O3 Composites were prepared by in situ bulk radical polymerization of methyl methacrylate in the presence of the cubic alpha-Fe2O3 particles using 2,2-azobisisobutyronitrile as initiator. The cubic a alpha-Fe2O3 particles were synthesized by forced hydrolysis of FeCl3 and characterized by X-ray diffraction analysis and transmission electron microscopy. The molar masses and molar mass distribution of synthesized PMMA samples were determined by gel permeation chromatography. The influence of alpha-Fe2O3 filler particles on the thermal properties of the PMMA matrix was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity of PMMA extracted from composite samples were not influenced by cubic alpha-Fe2O3 particles. The obtained composites have better thermal and thermooxiclative stability than pure PMMA. On the other hand, the values of the glass transition temperature of composite samples were identical to the glass transition temperature of pure PMMA. (c) 2008 Elsevier Ltd. All rights reserved.
T2  - Polymer Degradation and Stability
T1  - Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization
VL  - 94
IS  - 4
SP  - 701
EP  - 704
DO  - 10.1016/j.polymdegradstab.2008.12.018
ER  - 
@article{
author = "Džunuzović, Enis S. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "Poly(methyl methacrylate)/alpha-Fe2O3 Composites were prepared by in situ bulk radical polymerization of methyl methacrylate in the presence of the cubic alpha-Fe2O3 particles using 2,2-azobisisobutyronitrile as initiator. The cubic a alpha-Fe2O3 particles were synthesized by forced hydrolysis of FeCl3 and characterized by X-ray diffraction analysis and transmission electron microscopy. The molar masses and molar mass distribution of synthesized PMMA samples were determined by gel permeation chromatography. The influence of alpha-Fe2O3 filler particles on the thermal properties of the PMMA matrix was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity of PMMA extracted from composite samples were not influenced by cubic alpha-Fe2O3 particles. The obtained composites have better thermal and thermooxiclative stability than pure PMMA. On the other hand, the values of the glass transition temperature of composite samples were identical to the glass transition temperature of pure PMMA. (c) 2008 Elsevier Ltd. All rights reserved.",
journal = "Polymer Degradation and Stability",
title = "Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization",
volume = "94",
number = "4",
pages = "701-704",
doi = "10.1016/j.polymdegradstab.2008.12.018"
}
Džunuzović, E. S., Marinović-Cincović, M., Jeremić, K. B.,& Nedeljković, J.. (2009). Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization. in Polymer Degradation and Stability, 94(4), 701-704.
https://doi.org/10.1016/j.polymdegradstab.2008.12.018
Džunuzović ES, Marinović-Cincović M, Jeremić KB, Nedeljković J. Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization. in Polymer Degradation and Stability. 2009;94(4):701-704.
doi:10.1016/j.polymdegradstab.2008.12.018 .
Džunuzović, Enis S., Marinović-Cincović, Milena, Jeremić, Katarina B., Nedeljković, Jovan, "Influence of cubic alpha-Fe2O3 particles on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerization" in Polymer Degradation and Stability, 94, no. 4 (2009):701-704,
https://doi.org/10.1016/j.polymdegradstab.2008.12.018 . .
10
10
12

Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene

Džunuzović, Enis S.; Vodnik, Vesna; Jeremić, Katarina B.; Nedeljković, Jovan

(2009)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Vodnik, Vesna
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3662
AB  - TiO2 nanoparticles. surface modified with 6-palmitate ascorbic acid, were incorporated in polystyrene (PS) by in situ bulk radical polymerization of styrene using 2,2-azobisisobutyronitrile as initiator. The molar mass and polydispersity of synthesized samples were estimated by gel permeation chromatography. The influence of surface modified TiO2 nanoparticles on the thermal properties of PS matrix was examined using thermogravimetry and differential scanning calorimetry. Molar mass and polydispersity of PS were not influenced by the presence of the TiO2 nanoparticles. On the other hand, PS/TiO2 nanocomposites have higher glass transition temperature and better thermal and thermooxidative stability than the pure PS. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene
VL  - 63
IS  - 11
SP  - 908
EP  - 910
DO  - 10.1016/j.matlet.2009.01.039
ER  - 
@article{
author = "Džunuzović, Enis S. and Vodnik, Vesna and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "TiO2 nanoparticles. surface modified with 6-palmitate ascorbic acid, were incorporated in polystyrene (PS) by in situ bulk radical polymerization of styrene using 2,2-azobisisobutyronitrile as initiator. The molar mass and polydispersity of synthesized samples were estimated by gel permeation chromatography. The influence of surface modified TiO2 nanoparticles on the thermal properties of PS matrix was examined using thermogravimetry and differential scanning calorimetry. Molar mass and polydispersity of PS were not influenced by the presence of the TiO2 nanoparticles. On the other hand, PS/TiO2 nanocomposites have higher glass transition temperature and better thermal and thermooxidative stability than the pure PS. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene",
volume = "63",
number = "11",
pages = "908-910",
doi = "10.1016/j.matlet.2009.01.039"
}
Džunuzović, E. S., Vodnik, V., Jeremić, K. B.,& Nedeljković, J.. (2009). Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene. in Materials Letters, 63(11), 908-910.
https://doi.org/10.1016/j.matlet.2009.01.039
Džunuzović ES, Vodnik V, Jeremić KB, Nedeljković J. Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene. in Materials Letters. 2009;63(11):908-910.
doi:10.1016/j.matlet.2009.01.039 .
Džunuzović, Enis S., Vodnik, Vesna, Jeremić, Katarina B., Nedeljković, Jovan, "Thermal properties of PS/TiO2 nanocomposites obtained by in situ bulk radical polymerization of styrene" in Materials Letters, 63, no. 11 (2009):908-910,
https://doi.org/10.1016/j.matlet.2009.01.039 . .
1
12
10
12

Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization

Džunuzović, Enis S.; Marinović-Cincović, Milena; Vuković, Jasna V.; Jeremić, Katarina B.; Nedeljković, Jovan

(2009)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Vuković, Jasna V.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2009
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3963
AB  - The surface of anatase TiO2 nanoparticles, obtained by the controlled hydrolysis of titanium tetrachloride, was modified by 6-palmitate ascorbic acid. The surface modified TiO2 nanoparticles were dispersed in methyl methacrylate and mixed with a appropriate amount of poly(methyl methacrylate) to obtain a syrup. The nano-composite sheets were made by bulk polymerization of the syrup in a glass sandwich cell using 2,2-azobisisobutyronitrile as initiator. The molar masses and molar mass distributions of synthesized poly(methyl methacrylate) samples were determined by gel permeation chromatography. The content of unreacted double bonds in synthesized samples was determined by H-1 NMR spectroscopy. The influence of TiO2 nanoparticles on the thermal stability of the poly(methyl methacrylate) matrix was investigated using thermogravimetric analysis and differential scanning calorimetry. The synthesized samples of poly(methyl methacrylate) have different molar mass and polydispersity depending on the content of the surface modified TiO2 nanoparticles. The values of glass transition temperature of so prepared nanocomposite samples were lower than for pure poly(methyl methacrylate), while the glass transition temperature of samples preheated in inert atmosphere was very similar to the glass transition temperature of pure poly(methyl methacrylate). The thermal stability of nanocomposite samples in nitrogen and air was different from thermal stability of pure poly(methyl methacrylate). POLYM. COMPOS., 30:737-742, 2009. (C) 2008 Society of Plastics Engineers
T2  - Polymer Composites
T1  - Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization
VL  - 30
IS  - 6
SP  - 737
EP  - 742
DO  - 10.1002/pc.20606
ER  - 
@article{
author = "Džunuzović, Enis S. and Marinović-Cincović, Milena and Vuković, Jasna V. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2009",
abstract = "The surface of anatase TiO2 nanoparticles, obtained by the controlled hydrolysis of titanium tetrachloride, was modified by 6-palmitate ascorbic acid. The surface modified TiO2 nanoparticles were dispersed in methyl methacrylate and mixed with a appropriate amount of poly(methyl methacrylate) to obtain a syrup. The nano-composite sheets were made by bulk polymerization of the syrup in a glass sandwich cell using 2,2-azobisisobutyronitrile as initiator. The molar masses and molar mass distributions of synthesized poly(methyl methacrylate) samples were determined by gel permeation chromatography. The content of unreacted double bonds in synthesized samples was determined by H-1 NMR spectroscopy. The influence of TiO2 nanoparticles on the thermal stability of the poly(methyl methacrylate) matrix was investigated using thermogravimetric analysis and differential scanning calorimetry. The synthesized samples of poly(methyl methacrylate) have different molar mass and polydispersity depending on the content of the surface modified TiO2 nanoparticles. The values of glass transition temperature of so prepared nanocomposite samples were lower than for pure poly(methyl methacrylate), while the glass transition temperature of samples preheated in inert atmosphere was very similar to the glass transition temperature of pure poly(methyl methacrylate). The thermal stability of nanocomposite samples in nitrogen and air was different from thermal stability of pure poly(methyl methacrylate). POLYM. COMPOS., 30:737-742, 2009. (C) 2008 Society of Plastics Engineers",
journal = "Polymer Composites",
title = "Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization",
volume = "30",
number = "6",
pages = "737-742",
doi = "10.1002/pc.20606"
}
Džunuzović, E. S., Marinović-Cincović, M., Vuković, J. V., Jeremić, K. B.,& Nedeljković, J.. (2009). Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization. in Polymer Composites, 30(6), 737-742.
https://doi.org/10.1002/pc.20606
Džunuzović ES, Marinović-Cincović M, Vuković JV, Jeremić KB, Nedeljković J. Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization. in Polymer Composites. 2009;30(6):737-742.
doi:10.1002/pc.20606 .
Džunuzović, Enis S., Marinović-Cincović, Milena, Vuković, Jasna V., Jeremić, Katarina B., Nedeljković, Jovan, "Thermal Properties of PMMA/TiO2 Nanocomposites Prepared by In-Situ Bulk Polymerization" in Polymer Composites, 30, no. 6 (2009):737-742,
https://doi.org/10.1002/pc.20606 . .
40
35
40

Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate

Džunuzović, Enis S.; Marinović-Cincović, Milena; Jeremić, Katarina B.; Vuković, Jasna; Nedeljković, Jovan

(2008)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Vuković, Jasna
AU  - Nedeljković, Jovan
PY  - 2008
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3368
AB  - alpha-Fe2O3 nanorods were incorporated into poly(methyl methacrylate) (PMMA) by in situ radical polymerisation of methyl methacrylate initiated by 2,2 -azobisisobutyronitrile. The alpha-Fe2O3 nanorods were synthesized by forced hydrolysis of FeCl3 and structural characterization was performed by X-ray diffraction and transmission electron microscopy. The molar mass and the polydispersity index of synthesized PMMA samples were determined by gel permeation chromatography. The content of residual monomer was determined by H-1 NMR spectroscopy. The influence of alpha-Fe2O3 nanorods on the thermal stability of the polymer was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity index of PMMA were dependent on the content of alpha-Fe2O3 nanorods. The values of the glass transition temperature of the nanocomposites were lower compared to pure PMMA. Also, the thermal stability of nanocomposites in nitrogen and air was different from that of pure PMMA. (c) 2007 Elsevier Ltd. All rights reserved.
T2  - Polymer Degradation and Stability
T1  - Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate
VL  - 93
IS  - 1
SP  - 77
EP  - 83
DO  - 10.1016/j.polymdegradstab.2007.10.015
ER  - 
@article{
author = "Džunuzović, Enis S. and Marinović-Cincović, Milena and Jeremić, Katarina B. and Vuković, Jasna and Nedeljković, Jovan",
year = "2008",
abstract = "alpha-Fe2O3 nanorods were incorporated into poly(methyl methacrylate) (PMMA) by in situ radical polymerisation of methyl methacrylate initiated by 2,2 -azobisisobutyronitrile. The alpha-Fe2O3 nanorods were synthesized by forced hydrolysis of FeCl3 and structural characterization was performed by X-ray diffraction and transmission electron microscopy. The molar mass and the polydispersity index of synthesized PMMA samples were determined by gel permeation chromatography. The content of residual monomer was determined by H-1 NMR spectroscopy. The influence of alpha-Fe2O3 nanorods on the thermal stability of the polymer was investigated using thermogravimetry and differential scanning calorimetry. The molar mass and polydispersity index of PMMA were dependent on the content of alpha-Fe2O3 nanorods. The values of the glass transition temperature of the nanocomposites were lower compared to pure PMMA. Also, the thermal stability of nanocomposites in nitrogen and air was different from that of pure PMMA. (c) 2007 Elsevier Ltd. All rights reserved.",
journal = "Polymer Degradation and Stability",
title = "Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate",
volume = "93",
number = "1",
pages = "77-83",
doi = "10.1016/j.polymdegradstab.2007.10.015"
}
Džunuzović, E. S., Marinović-Cincović, M., Jeremić, K. B., Vuković, J.,& Nedeljković, J.. (2008). Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate. in Polymer Degradation and Stability, 93(1), 77-83.
https://doi.org/10.1016/j.polymdegradstab.2007.10.015
Džunuzović ES, Marinović-Cincović M, Jeremić KB, Vuković J, Nedeljković J. Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate. in Polymer Degradation and Stability. 2008;93(1):77-83.
doi:10.1016/j.polymdegradstab.2007.10.015 .
Džunuzović, Enis S., Marinović-Cincović, Milena, Jeremić, Katarina B., Vuković, Jasna, Nedeljković, Jovan, "Influence of alpha-Fe2O3 nanorods on the thermal stability of poly(methyl methacrylate) synthesized by in situ bulk polymerisation of methyl methacrylate" in Polymer Degradation and Stability, 93, no. 1 (2008):77-83,
https://doi.org/10.1016/j.polymdegradstab.2007.10.015 . .
12
14
14

In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles

Džunuzović, Enis S.; Jeremić, Katarina B.; Nedeljković, Jovan

(2007)

TY  - JOUR
AU  - Džunuzović, Enis S.
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3304
AB  - Surface modified TiO2 nanoparticles dissolved in toluene were encapsulated in PMMA by in situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile. The surface modification of the TiO2 nanoparticles (average diameter of 4.5 nm) was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The surface modified TiO2/nanoparticles were characterized using UV-Vis and FTIR spectroscopy, while the obtained polymer nanocomposites were characterized using reflection and H-1 NMR spectroscopy, as well as gel permeation chromatography. The influence of the TiO2 nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. The glass transition temperature of the polymer was not influenced by the presence of the nanoparticles while the thermal stability was significantly improved. (C) 2007 Elsevier Ltd. All rights reserved.
T2  - European Polymer Journal
T1  - In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles
VL  - 43
IS  - 9
SP  - 3719
EP  - 3726
DO  - 10.1016/j.eurpolymj.2007.06.026
ER  - 
@article{
author = "Džunuzović, Enis S. and Jeremić, Katarina B. and Nedeljković, Jovan",
year = "2007",
abstract = "Surface modified TiO2 nanoparticles dissolved in toluene were encapsulated in PMMA by in situ radical polymerization of methyl methacrylate initiated by 2,2-azobisisobutyronitrile. The surface modification of the TiO2 nanoparticles (average diameter of 4.5 nm) was achieved by the formation of a charge transfer complex between TiO2 nanoparticles and 6-palmitate ascorbic acid. The surface modified TiO2/nanoparticles were characterized using UV-Vis and FTIR spectroscopy, while the obtained polymer nanocomposites were characterized using reflection and H-1 NMR spectroscopy, as well as gel permeation chromatography. The influence of the TiO2 nanoparticles on the thermal properties of the PMMA matrix was investigated using thermo-gravimetric analysis and differential scanning calorimetry. The glass transition temperature of the polymer was not influenced by the presence of the nanoparticles while the thermal stability was significantly improved. (C) 2007 Elsevier Ltd. All rights reserved.",
journal = "European Polymer Journal",
title = "In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles",
volume = "43",
number = "9",
pages = "3719-3726",
doi = "10.1016/j.eurpolymj.2007.06.026"
}
Džunuzović, E. S., Jeremić, K. B.,& Nedeljković, J.. (2007). In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles. in European Polymer Journal, 43(9), 3719-3726.
https://doi.org/10.1016/j.eurpolymj.2007.06.026
Džunuzović ES, Jeremić KB, Nedeljković J. In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles. in European Polymer Journal. 2007;43(9):3719-3726.
doi:10.1016/j.eurpolymj.2007.06.026 .
Džunuzović, Enis S., Jeremić, Katarina B., Nedeljković, Jovan, "In situ radical polymerization of methyl methacrylate in a solution of surface modified TiO2 and nanoparticles" in European Polymer Journal, 43, no. 9 (2007):3719-3726,
https://doi.org/10.1016/j.eurpolymj.2007.06.026 . .
73
63
71

Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines

Marinović-Cincović, Milena; Babić, Dragan; Džunuzović, Enis S.; Popov-Pergal, Katarina; Rancic, Milica

(2007)

TY  - JOUR
AU  - Marinović-Cincović, Milena
AU  - Babić, Dragan
AU  - Džunuzović, Enis S.
AU  - Popov-Pergal, Katarina
AU  - Rancic, Milica
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3301
AB  - Polyimide resins were obtained from the reaction between N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and the following compounds with terminal amino groups: urea, 4-[(4-aminophenyl)sulfonyl] aniline, thiourea, 2-aminoethylamine, and 4.4-diaminodiphenylmethane. The thermal and thermooxidative behaviour of the polyimide resins was studied by thermogravimetric measurements (TG) in oxygen and nitrogen. Polyimide resins have been irradiated (500 kGy) and their radiation stability evaluated on the basis of thermal and thermooxidative behaviour of irradiated samples. The thermal and oxidative degradation of the examined polyimides is complex and occurs in two phases. The first step occurs in both nitrogen and oxygen but it is somewhat less pronounced in oxygen due to oxidation and formation of more stable products. All samples showed very good radiation stability and there is almost no change in the first degradation step while the span of the peaks in the second step is narrowed and temperatures are slightly lower. (C) 2007 Elsevier Ltd. All rights reserved.
T2  - Polymer Degradation and Stability
T1  - Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines
VL  - 92
IS  - 9
SP  - 1730
EP  - 1736
DO  - 10.1016/j.polymdegradstab.2007.05.021
ER  - 
@article{
author = "Marinović-Cincović, Milena and Babić, Dragan and Džunuzović, Enis S. and Popov-Pergal, Katarina and Rancic, Milica",
year = "2007",
abstract = "Polyimide resins were obtained from the reaction between N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and the following compounds with terminal amino groups: urea, 4-[(4-aminophenyl)sulfonyl] aniline, thiourea, 2-aminoethylamine, and 4.4-diaminodiphenylmethane. The thermal and thermooxidative behaviour of the polyimide resins was studied by thermogravimetric measurements (TG) in oxygen and nitrogen. Polyimide resins have been irradiated (500 kGy) and their radiation stability evaluated on the basis of thermal and thermooxidative behaviour of irradiated samples. The thermal and oxidative degradation of the examined polyimides is complex and occurs in two phases. The first step occurs in both nitrogen and oxygen but it is somewhat less pronounced in oxygen due to oxidation and formation of more stable products. All samples showed very good radiation stability and there is almost no change in the first degradation step while the span of the peaks in the second step is narrowed and temperatures are slightly lower. (C) 2007 Elsevier Ltd. All rights reserved.",
journal = "Polymer Degradation and Stability",
title = "Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines",
volume = "92",
number = "9",
pages = "1730-1736",
doi = "10.1016/j.polymdegradstab.2007.05.021"
}
Marinović-Cincović, M., Babić, D., Džunuzović, E. S., Popov-Pergal, K.,& Rancic, M.. (2007). Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines. in Polymer Degradation and Stability, 92(9), 1730-1736.
https://doi.org/10.1016/j.polymdegradstab.2007.05.021
Marinović-Cincović M, Babić D, Džunuzović ES, Popov-Pergal K, Rancic M. Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines. in Polymer Degradation and Stability. 2007;92(9):1730-1736.
doi:10.1016/j.polymdegradstab.2007.05.021 .
Marinović-Cincović, Milena, Babić, Dragan, Džunuzović, Enis S., Popov-Pergal, Katarina, Rancic, Milica, "Thermal, oxidative and radiation stability of polyimides. Part IV: Polyimides based on N-[4-benzoyl-2-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-phenyl]-acetamide and different diamines" in Polymer Degradation and Stability, 92, no. 9 (2007):1730-1736,
https://doi.org/10.1016/j.polymdegradstab.2007.05.021 . .
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