TY  - JOUR
AU  - Mašojević, Dijana
AU  - Stamenović, Una
AU  - Otoničar, Mojca
AU  - Davidović, Slađana
AU  - Škapin, Srečo
AU  - Barudžija, Tanja
AU  - Vodnik, Vesna
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5918
AB  - A novel and effective antibacterial agent based on a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By using a straightforward in situ polymerization method in water, a copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout a granular PPy matrix, was characterized and subjected to determination of antibacterial activity toward E. coli, and S. aureus. In this survey, the synergistic engagement of various features of CuNPs and PPy against bacteria was somewhat expected. After a 24 h interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17 % bacterial growth inhibition, while 10 ppm has a cidal value of 99.99 % at the same time. Safe and environmentally acceptable concentrations of Cu/PPy indicate that it is convenient as an antibacterial agent for wider use.
PB  - Elsevier B.V.
T2  - Materials Letters
T1  - Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite
SP  - 134051
VL  - 338
DO  - 10.1016/j.matlet.2023.134051
ER  - 

@article{
author = "Mašojević, Dijana and Stamenović, Una and Otoničar, Mojca and Davidović, Slađana and Škapin, Srečo and Barudžija, Tanja and Vodnik, Vesna",
year = "2023",
abstract = "A novel and effective antibacterial agent based on a combination of copper nanoparticles (CuNPs) and polypyrrole (PPy) is presented. By using a straightforward in situ polymerization method in water, a copper/polypyrrole (Cu/PPy) nanocomposite with spherical CuNPs, around 25 nm in diameter, uniformly dispersed throughout a granular PPy matrix, was characterized and subjected to determination of antibacterial activity toward E. coli, and S. aureus. In this survey, the synergistic engagement of various features of CuNPs and PPy against bacteria was somewhat expected. After a 24 h interaction with S. aureus, already 2 ppm of Cu/PPy with only 9.45 wt% content of Cu is acting almost completely cidal, with 99.17 % bacterial growth inhibition, while 10 ppm has a cidal value of 99.99 % at the same time. Safe and environmentally acceptable concentrations of Cu/PPy indicate that it is convenient as an antibacterial agent for wider use.",
publisher = "Elsevier B.V.",
journal = "Materials Letters",
title = "Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite",
pages = "134051",
volume = "338",
doi = "10.1016/j.matlet.2023.134051"
}

Mašojević, D., Stamenović, U., Otoničar, M., Davidović, S., Škapin, S., Barudžija, T.,& Vodnik, V.. (2023). Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite. in Materials Letters
Elsevier B.V.., 338, 134051.
https://doi.org/10.1016/j.matlet.2023.134051

Mašojević D, Stamenović U, Otoničar M, Davidović S, Škapin S, Barudžija T, Vodnik V. Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite. in Materials Letters. 2023;338:134051.
doi:10.1016/j.matlet.2023.134051 .

Mašojević, Dijana, Stamenović, Una, Otoničar, Mojca, Davidović, Slađana, Škapin, Srečo, Barudžija, Tanja, Vodnik, Vesna, "Evaluation of the antibacterial effectiveness of novel copper/polypyrrole nanocomposite" in Materials Letters, 338 (2023):134051,
https://doi.org/10.1016/j.matlet.2023.134051 . .

TY  - JOUR
AU  - Stamenovic, Una
AU  - Davidović, Slađana
AU  - Petrovic, Sandra
AU  - Leskovac, Andreja
AU  - Stoiljkovic, Milovan
AU  - Vodnik, Vesna
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4852
AB  - Two silver-polyaniline/polyvinylpyrrolidone (Ag-PANI/PVP) nanocomposites were prepared using in situ integration of silver nanoparticles (AgNPs) during oxidative aniline polymerization, accelerated by the presence of PVP, which as well minimized the risk of particle agglomeration and macroscopic precipitation. Both nanocomposites have similar silver content (similar to 44 wt% Ag) but different morphological features of AgNPs (spheres/triangles) and polymers (granular/wrinkling pattern). Several spectroscopic, macroscopic, and analytical techniques, microscopy, and surface analysis methods have been used to analyze their physical and chemical properties. Investigation of their antimicrobial potential and possible application as an effective weapon against indicator microbial strains, E. coli, S. aureus, and C. albicans, has shown inhibition of microbial growth by more than 90%, even at low composite concentrations (5 ppm) and short contact time (4 h). A biosafety assessment of Ag-PANI/PVP that comprised testing the genotoxicity and redox modulating activity was performed using human peripheral blood cells as a model system. The obtained results have shown that the investigated Ag-PANI/PVP exhibited significant prooxidant and cytostatic effects (p   lt 0.05) with no apparent potential to induce DNA damage. Although precautions should be taken to protect human health, the significant antimicrobial efficiency of Ag-PANI/PVP makes it suitable for further studies and applications in non-medical areas, such as wastewater treatment.
T2  - New Journal of Chemistry
T1  - Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles
EP  - 12720
IS  - 28
SP  - 12711
VL  - 45
DO  - 10.1039/d1nj02729h
ER  - 

@article{
author = "Stamenovic, Una and Davidović, Slađana and Petrovic, Sandra and Leskovac, Andreja and Stoiljkovic, Milovan and Vodnik, Vesna",
year = "2021",
abstract = "Two silver-polyaniline/polyvinylpyrrolidone (Ag-PANI/PVP) nanocomposites were prepared using in situ integration of silver nanoparticles (AgNPs) during oxidative aniline polymerization, accelerated by the presence of PVP, which as well minimized the risk of particle agglomeration and macroscopic precipitation. Both nanocomposites have similar silver content (similar to 44 wt% Ag) but different morphological features of AgNPs (spheres/triangles) and polymers (granular/wrinkling pattern). Several spectroscopic, macroscopic, and analytical techniques, microscopy, and surface analysis methods have been used to analyze their physical and chemical properties. Investigation of their antimicrobial potential and possible application as an effective weapon against indicator microbial strains, E. coli, S. aureus, and C. albicans, has shown inhibition of microbial growth by more than 90%, even at low composite concentrations (5 ppm) and short contact time (4 h). A biosafety assessment of Ag-PANI/PVP that comprised testing the genotoxicity and redox modulating activity was performed using human peripheral blood cells as a model system. The obtained results have shown that the investigated Ag-PANI/PVP exhibited significant prooxidant and cytostatic effects (p   lt 0.05) with no apparent potential to induce DNA damage. Although precautions should be taken to protect human health, the significant antimicrobial efficiency of Ag-PANI/PVP makes it suitable for further studies and applications in non-medical areas, such as wastewater treatment.",
journal = "New Journal of Chemistry",
title = "Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles",
pages = "12720-12711",
number = "28",
volume = "45",
doi = "10.1039/d1nj02729h"
}

Stamenovic, U., Davidović, S., Petrovic, S., Leskovac, A., Stoiljkovic, M.,& Vodnik, V.. (2021). Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles. in New Journal of Chemistry, 45(28), 12711-12720.
https://doi.org/10.1039/d1nj02729h

Stamenovic U, Davidović S, Petrovic S, Leskovac A, Stoiljkovic M, Vodnik V. Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles. in New Journal of Chemistry. 2021;45(28):12711-12720.
doi:10.1039/d1nj02729h .

Stamenovic, Una, Davidović, Slađana, Petrovic, Sandra, Leskovac, Andreja, Stoiljkovic, Milovan, Vodnik, Vesna, "Antimicrobial and biological effects of polyaniline/polyvinylpyrrolidone nanocomposites loaded with silver nanospheres/triangles" in New Journal of Chemistry, 45, no. 28 (2021):12711-12720,
https://doi.org/10.1039/d1nj02729h . .

TY  - JOUR
AU  - Bogdanović, Una
AU  - Dimitrijević, Suzana
AU  - Škapin, Srečo Davor
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Leskovac, Andreja
AU  - Petrović, Sandra
AU  - Stoiljković, Milovan
AU  - Vodnik, Vesna
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3928
AB  - Copper nanoparticles (Cu NPs) have proven to own excellent antimicrobial efficacy, but the problems of easy oxidation and aggregation limit their practical application. Here, nanocomposite based on polyaniline (PANI) and Cu NPs solved this problem and brought additional physicochemical properties that are markedly advantageous for antimicrobial applications. Current work exploits this potential, to examine its time- and concentration-dependent antimicrobial activity, employing E. coli, S. aureus, and C. albicans as a model microbial species. Regarding the presence of polaronic charge carriers in the fibrous polyaniline network, effects of Cu NPs size and their partially oxidized surfaces (the data were confirmed by HRTEM, FESEM, XRD, Raman and XPS analysis), as well as rapid copper ions release, Cu-PANI nanocomposite showed efficient bactericidal and fungicidal activities at the concentrations  lt = 1 ppm, within the incubation time of 2 h. Beside the quantitative analysis, the high levels of cellular disruption for all tested microbes were evidenced by atomic force microscopy. Moreover, the minimum inhibitory and bactericidal concentrations of the Cu-PANI nanocomposite were lower than those reported for other nanocomposites. Using such low concentrations is recognized as a good way to avoid its toxicity toward the environment. For this purpose, Cu-PANI nanocomposite is tested for its genotoxicity and influence on the oxidative status of the human cells in vitro.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation
EP  - 60
SP  - 49
VL  - 93
DO  - 10.1016/j.msec.2018.07.067
ER  - 

@article{
author = "Bogdanović, Una and Dimitrijević, Suzana and Škapin, Srečo Davor and Popović, Maja and Rakočević, Zlatko Lj. and Leskovac, Andreja and Petrović, Sandra and Stoiljković, Milovan and Vodnik, Vesna",
year = "2018",
abstract = "Copper nanoparticles (Cu NPs) have proven to own excellent antimicrobial efficacy, but the problems of easy oxidation and aggregation limit their practical application. Here, nanocomposite based on polyaniline (PANI) and Cu NPs solved this problem and brought additional physicochemical properties that are markedly advantageous for antimicrobial applications. Current work exploits this potential, to examine its time- and concentration-dependent antimicrobial activity, employing E. coli, S. aureus, and C. albicans as a model microbial species. Regarding the presence of polaronic charge carriers in the fibrous polyaniline network, effects of Cu NPs size and their partially oxidized surfaces (the data were confirmed by HRTEM, FESEM, XRD, Raman and XPS analysis), as well as rapid copper ions release, Cu-PANI nanocomposite showed efficient bactericidal and fungicidal activities at the concentrations  lt = 1 ppm, within the incubation time of 2 h. Beside the quantitative analysis, the high levels of cellular disruption for all tested microbes were evidenced by atomic force microscopy. Moreover, the minimum inhibitory and bactericidal concentrations of the Cu-PANI nanocomposite were lower than those reported for other nanocomposites. Using such low concentrations is recognized as a good way to avoid its toxicity toward the environment. For this purpose, Cu-PANI nanocomposite is tested for its genotoxicity and influence on the oxidative status of the human cells in vitro.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation",
pages = "60-49",
volume = "93",
doi = "10.1016/j.msec.2018.07.067"
}

Bogdanović, U., Dimitrijević, S., Škapin, S. D., Popović, M., Rakočević, Z. Lj., Leskovac, A., Petrović, S., Stoiljković, M.,& Vodnik, V.. (2018). Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 93, 49-60.
https://doi.org/10.1016/j.msec.2018.07.067

Bogdanović U, Dimitrijević S, Škapin SD, Popović M, Rakočević ZL, Leskovac A, Petrović S, Stoiljković M, Vodnik V. Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation. in Materials Science & Engineering C-Materials for Biological Applications. 2018;93:49-60.
doi:10.1016/j.msec.2018.07.067 .

Bogdanović, Una, Dimitrijević, Suzana, Škapin, Srečo Davor, Popović, Maja, Rakočević, Zlatko Lj., Leskovac, Andreja, Petrović, Sandra, Stoiljković, Milovan, Vodnik, Vesna, "Copper-polyaniline nanocomposite: Role of physicochemical properties on the antimicrobial activity and genotoxicity evaluation" in Materials Science & Engineering C-Materials for Biological Applications, 93 (2018):49-60,
https://doi.org/10.1016/j.msec.2018.07.067 . .

TY  - JOUR
AU  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Božanić, Dušan K.
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Dimitrijević-Branković, Suzana
AU  - Miljković, Miona
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Đoković, Vladimir
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3726
AB  - The interaction of the tryptophan functionalized Ag nanoparticles and live Candida albicans cells was studied by synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging at the DISCO beamline of Synchrotron SOLEIL. DUV imaging showed that incubation of the fungus with functionalized nanoparticles results in significant increase in the fluorescence signal. The analysis of the images revealed that the interaction of the nanoparticles with (pseudo)hyphae polymorphs of the diploid fungus was less pronounced than in the case of yeast cells or budding spores. The changes in the intensity of the fluorescence signals of the cells after incubation were followed in [327-353 nm] and [370-410 nm] spectral ranges that correspond to the fluorescence of tryptophan in non-polar and polar environment, respectively. As a consequence of the environmental sensitivity of the silver-tryptophan fluorescent nanoprobe, we were able to determine the possible accumulation sites of the nanoparticles. The analysis of the intensity decay kinetics showed that the photobleaching effects were more pronounced in the case of the functionalized nanoparticle treated cells. The results of time-integrated emission in the mentioned spectral ranges suggested that the nanoparticles penetrate the cells, but that the majority of the nanoparticles attach to the cells' surfaces.
PB  - Elsevier Science Bv, Amsterdam
T2  - Colloids and Surfaces B-Biointerfaces
T1  - Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study
EP  - 348
SP  - 341
VL  - 155
DO  - 10.1016/j.colsurfb.2017.04.044
ER  - 

@article{
author = "Dojčilović, Radovan and Pajović, Jelena D. and Božanić, Dušan K. and Bogdanović, Una and Vodnik, Vesna and Dimitrijević-Branković, Suzana and Miljković, Miona and Kascakova, Slavka and Refregiers, Matthieu and Đoković, Vladimir",
year = "2017",
abstract = "The interaction of the tryptophan functionalized Ag nanoparticles and live Candida albicans cells was studied by synchrotron excitation deep-ultraviolet (DUV) fluorescence imaging at the DISCO beamline of Synchrotron SOLEIL. DUV imaging showed that incubation of the fungus with functionalized nanoparticles results in significant increase in the fluorescence signal. The analysis of the images revealed that the interaction of the nanoparticles with (pseudo)hyphae polymorphs of the diploid fungus was less pronounced than in the case of yeast cells or budding spores. The changes in the intensity of the fluorescence signals of the cells after incubation were followed in [327-353 nm] and [370-410 nm] spectral ranges that correspond to the fluorescence of tryptophan in non-polar and polar environment, respectively. As a consequence of the environmental sensitivity of the silver-tryptophan fluorescent nanoprobe, we were able to determine the possible accumulation sites of the nanoparticles. The analysis of the intensity decay kinetics showed that the photobleaching effects were more pronounced in the case of the functionalized nanoparticle treated cells. The results of time-integrated emission in the mentioned spectral ranges suggested that the nanoparticles penetrate the cells, but that the majority of the nanoparticles attach to the cells' surfaces.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces B-Biointerfaces",
title = "Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study",
pages = "348-341",
volume = "155",
doi = "10.1016/j.colsurfb.2017.04.044"
}

Dojčilović, R., Pajović, J. D., Božanić, D. K., Bogdanović, U., Vodnik, V., Dimitrijević-Branković, S., Miljković, M., Kascakova, S., Refregiers, M.,& Đoković, V.. (2017). Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study. in Colloids and Surfaces B-Biointerfaces
Elsevier Science Bv, Amsterdam., 155, 341-348.
https://doi.org/10.1016/j.colsurfb.2017.04.044

Dojčilović R, Pajović JD, Božanić DK, Bogdanović U, Vodnik V, Dimitrijević-Branković S, Miljković M, Kascakova S, Refregiers M, Đoković V. Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study. in Colloids and Surfaces B-Biointerfaces. 2017;155:341-348.
doi:10.1016/j.colsurfb.2017.04.044 .

Dojčilović, Radovan, Pajović, Jelena D., Božanić, Dušan K., Bogdanović, Una, Vodnik, Vesna, Dimitrijević-Branković, Suzana, Miljković, Miona, Kascakova, Slavka, Refregiers, Matthieu, Đoković, Vladimir, "Interaction of amino acid-functionalized silver nanoparticles and Candida albicans polymorphs: A deep-UV fluorescence imaging study" in Colloids and Surfaces B-Biointerfaces, 155 (2017):341-348,
https://doi.org/10.1016/j.colsurfb.2017.04.044 . .

TY  - JOUR
AU  - Pajović, Jelena D.
AU  - Dojčilović, Radovan
AU  - Božanić, Dušan K.
AU  - Vodnik, Vesna
AU  - Dimitrijević-Branković, Suzana
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Markelić, Milica
AU  - Đoković, Vladimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3256
AB  - Fluorescent nanostructures were prepared by functionalization of gold nanoparticles with riboflavin molecules and used as probes for synchrotron radiation deep ultraviolet (SR-DUV) fluorescence imaging of gluteraldehyde-fixed Candida albicans cells. The nanoparticles were characterized by transmission electron microscopy (TEM) and optical spectroscopy techniques. The TEM analysis showed that the nanostructures were 6 nm in diameter, while the results of the fluorescence spectroscopies confirmed the photoluminescence of the nanoparticles. The SR-DUV imaging showed that it was possible to distinguish the fluorescence of the nanoparticles from the autofluorescence of the cells, as well as that the local maxima of the signal pertaining to the fluorescence of goldriboflavin nanostructures were mostly positioned on the surfaces of the C. albicans cells of spherical morphology.
PB  - Springer, Dordrecht
T2  - Optical and Quantum Electronics
T1  - Deep UV fluorescence imaging study of Candida albicans cells treated with gold-riboflavin hydrocolloids
IS  - 6
VL  - 48
DO  - 10.1007/s11082-016-0578-y
ER  - 

@article{
author = "Pajović, Jelena D. and Dojčilović, Radovan and Božanić, Dušan K. and Vodnik, Vesna and Dimitrijević-Branković, Suzana and Kascakova, Slavka and Refregiers, Matthieu and Markelić, Milica and Đoković, Vladimir",
year = "2016",
abstract = "Fluorescent nanostructures were prepared by functionalization of gold nanoparticles with riboflavin molecules and used as probes for synchrotron radiation deep ultraviolet (SR-DUV) fluorescence imaging of gluteraldehyde-fixed Candida albicans cells. The nanoparticles were characterized by transmission electron microscopy (TEM) and optical spectroscopy techniques. The TEM analysis showed that the nanostructures were 6 nm in diameter, while the results of the fluorescence spectroscopies confirmed the photoluminescence of the nanoparticles. The SR-DUV imaging showed that it was possible to distinguish the fluorescence of the nanoparticles from the autofluorescence of the cells, as well as that the local maxima of the signal pertaining to the fluorescence of goldriboflavin nanostructures were mostly positioned on the surfaces of the C. albicans cells of spherical morphology.",
publisher = "Springer, Dordrecht",
journal = "Optical and Quantum Electronics",
title = "Deep UV fluorescence imaging study of Candida albicans cells treated with gold-riboflavin hydrocolloids",
number = "6",
volume = "48",
doi = "10.1007/s11082-016-0578-y"
}

Pajović, J. D., Dojčilović, R., Božanić, D. K., Vodnik, V., Dimitrijević-Branković, S., Kascakova, S., Refregiers, M., Markelić, M.,& Đoković, V.. (2016). Deep UV fluorescence imaging study of Candida albicans cells treated with gold-riboflavin hydrocolloids. in Optical and Quantum Electronics
Springer, Dordrecht., 48(6).
https://doi.org/10.1007/s11082-016-0578-y

Pajović JD, Dojčilović R, Božanić DK, Vodnik V, Dimitrijević-Branković S, Kascakova S, Refregiers M, Markelić M, Đoković V. Deep UV fluorescence imaging study of Candida albicans cells treated with gold-riboflavin hydrocolloids. in Optical and Quantum Electronics. 2016;48(6).
doi:10.1007/s11082-016-0578-y .

Pajović, Jelena D., Dojčilović, Radovan, Božanić, Dušan K., Vodnik, Vesna, Dimitrijević-Branković, Suzana, Kascakova, Slavka, Refregiers, Matthieu, Markelić, Milica, Đoković, Vladimir, "Deep UV fluorescence imaging study of Candida albicans cells treated with gold-riboflavin hydrocolloids" in Optical and Quantum Electronics, 48, no. 6 (2016),
https://doi.org/10.1007/s11082-016-0578-y . .

TY  - JOUR
AU  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Božanić, Dušan K.
AU  - Vodnik, Vesna
AU  - Dimitrijević-Branković, Suzana
AU  - Milosavljević, Aleksandar R.
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Đoković, Vladimir
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3454
AB  - The investigation of the interaction of silver nanoparticles and live bacteria cells is of particular importance for understanding and controlling their bactericidal properties. In this study, the process of internalization of silver nanoparticles in Escherichia coli cells was followed by means of synchrotron excitation deep ultraviolet (DUV) fluorescence imaging. Antimicrobial nanostructures that can absorb and emit light in the UV region were prepared by functionalization of silver nanoparticles with tryptophan amino acid and used as environmentally sensitive fluorescent probes. The nanostructures were characterized by morphological (TEM) and spectroscopic methods (UV-vis, FTIR, XPS, and photoluminescence). The TEM images and the analyses of the UV-vis spectra suggested that the addition of tryptophan led to the formation of hybrid nanostructures with pronounced eccentricity and larger sizes with respect to that of the initial silver nanoparticles. The DUV imaging showed that it was possible to distinguish the fluorescent signal pertaining to silver-tryptophan nanostructures from the autofluorescence of the bacteria. The spatial resolution of the fluorescence images was 154 nm which was sufficient to perform analyses of the accumulation of the nanostructures within a single bacterium. The DUV imaging results imply that the tryptophan-functionalized silver nanoparticles interact with cell membranes via insertion of the amino acid into the phospholipid bilayer and enter the cells.
PB  - Royal Soc Chemistry, Cambridge
T2  - Analyst
T1  - A fluorescent nanoprobe for single bacterium tracking: functionalization of silver nanoparticles with tryptophan to probe the nanoparticle accumulation with single cell resolution
EP  - 1996
IS  - 6
SP  - 1988
VL  - 141
DO  - 10.1039/c5an02358k
ER  - 

@article{
author = "Dojčilović, Radovan and Pajović, Jelena D. and Božanić, Dušan K. and Vodnik, Vesna and Dimitrijević-Branković, Suzana and Milosavljević, Aleksandar R. and Kascakova, Slavka and Refregiers, Matthieu and Đoković, Vladimir",
year = "2016",
abstract = "The investigation of the interaction of silver nanoparticles and live bacteria cells is of particular importance for understanding and controlling their bactericidal properties. In this study, the process of internalization of silver nanoparticles in Escherichia coli cells was followed by means of synchrotron excitation deep ultraviolet (DUV) fluorescence imaging. Antimicrobial nanostructures that can absorb and emit light in the UV region were prepared by functionalization of silver nanoparticles with tryptophan amino acid and used as environmentally sensitive fluorescent probes. The nanostructures were characterized by morphological (TEM) and spectroscopic methods (UV-vis, FTIR, XPS, and photoluminescence). The TEM images and the analyses of the UV-vis spectra suggested that the addition of tryptophan led to the formation of hybrid nanostructures with pronounced eccentricity and larger sizes with respect to that of the initial silver nanoparticles. The DUV imaging showed that it was possible to distinguish the fluorescent signal pertaining to silver-tryptophan nanostructures from the autofluorescence of the bacteria. The spatial resolution of the fluorescence images was 154 nm which was sufficient to perform analyses of the accumulation of the nanostructures within a single bacterium. The DUV imaging results imply that the tryptophan-functionalized silver nanoparticles interact with cell membranes via insertion of the amino acid into the phospholipid bilayer and enter the cells.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Analyst",
title = "A fluorescent nanoprobe for single bacterium tracking: functionalization of silver nanoparticles with tryptophan to probe the nanoparticle accumulation with single cell resolution",
pages = "1996-1988",
number = "6",
volume = "141",
doi = "10.1039/c5an02358k"
}

Dojčilović, R., Pajović, J. D., Božanić, D. K., Vodnik, V., Dimitrijević-Branković, S., Milosavljević, A. R., Kascakova, S., Refregiers, M.,& Đoković, V.. (2016). A fluorescent nanoprobe for single bacterium tracking: functionalization of silver nanoparticles with tryptophan to probe the nanoparticle accumulation with single cell resolution. in Analyst
Royal Soc Chemistry, Cambridge., 141(6), 1988-1996.
https://doi.org/10.1039/c5an02358k

Dojčilović R, Pajović JD, Božanić DK, Vodnik V, Dimitrijević-Branković S, Milosavljević AR, Kascakova S, Refregiers M, Đoković V. A fluorescent nanoprobe for single bacterium tracking: functionalization of silver nanoparticles with tryptophan to probe the nanoparticle accumulation with single cell resolution. in Analyst. 2016;141(6):1988-1996.
doi:10.1039/c5an02358k .

Dojčilović, Radovan, Pajović, Jelena D., Božanić, Dušan K., Vodnik, Vesna, Dimitrijević-Branković, Suzana, Milosavljević, Aleksandar R., Kascakova, Slavka, Refregiers, Matthieu, Đoković, Vladimir, "A fluorescent nanoprobe for single bacterium tracking: functionalization of silver nanoparticles with tryptophan to probe the nanoparticle accumulation with single cell resolution" in Analyst, 141, no. 6 (2016):1988-1996,
https://doi.org/10.1039/c5an02358k . .

TY  - JOUR
AU  - Lazić, Vesna M.
AU  - Radoičić, Marija B.
AU  - Šaponjić, Zoran
AU  - Radetić, Tamara
AU  - Vodnik, Vesna
AU  - Nikolić, Svetlana
AU  - Dimitrijević, Suzana
AU  - Radetić, Maja
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3030
AB  - Recently, many efforts have been made to efficiently impregnate different textile materials with metal and metal oxide nanoparticles in order to provide antimicrobial, UV protective or self-cleaning properties. Evidence of their environmental risks is limited at this point. The aim of this study was to explore the influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics. Biodegradation behavior of cotton fabrics impregnated with Ag and TiO2 NPs from colloidal solutions of different concentrations was assessed according to standard test method ASTM 5988-03 and soil burial test. Degradation of cotton fabrics was also evaluated by enzymatic hydrolysis with cellulase. The morphology of fibers affected by biodegradation was analyzed by scanning electron microscopy (SEM). In order to get better insight into biodegradation process, dehydrogenase activity of soil has been determined. Ag and particularly TiO2 nanoparticles suppressed the biodegradation of cotton fabrics. The dehydrogenase activity of soil with cotton fabrics impregnated with TiO2 nanoparticles was the weakest. Severe damage of cotton fibers during the biodegradation process was confirmed by SEM.
PB  - Springer, Dordrecht
T2  - Cellulose
T1  - Negative influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics
EP  - 1378
IS  - 2
SP  - 1365
VL  - 22
DO  - 10.1007/s10570-015-0549-7
ER  - 

@article{
author = "Lazić, Vesna M. and Radoičić, Marija B. and Šaponjić, Zoran and Radetić, Tamara and Vodnik, Vesna and Nikolić, Svetlana and Dimitrijević, Suzana and Radetić, Maja",
year = "2015",
abstract = "Recently, many efforts have been made to efficiently impregnate different textile materials with metal and metal oxide nanoparticles in order to provide antimicrobial, UV protective or self-cleaning properties. Evidence of their environmental risks is limited at this point. The aim of this study was to explore the influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics. Biodegradation behavior of cotton fabrics impregnated with Ag and TiO2 NPs from colloidal solutions of different concentrations was assessed according to standard test method ASTM 5988-03 and soil burial test. Degradation of cotton fabrics was also evaluated by enzymatic hydrolysis with cellulase. The morphology of fibers affected by biodegradation was analyzed by scanning electron microscopy (SEM). In order to get better insight into biodegradation process, dehydrogenase activity of soil has been determined. Ag and particularly TiO2 nanoparticles suppressed the biodegradation of cotton fabrics. The dehydrogenase activity of soil with cotton fabrics impregnated with TiO2 nanoparticles was the weakest. Severe damage of cotton fibers during the biodegradation process was confirmed by SEM.",
publisher = "Springer, Dordrecht",
journal = "Cellulose",
title = "Negative influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics",
pages = "1378-1365",
number = "2",
volume = "22",
doi = "10.1007/s10570-015-0549-7"
}

Lazić, V. M., Radoičić, M. B., Šaponjić, Z., Radetić, T., Vodnik, V., Nikolić, S., Dimitrijević, S.,& Radetić, M.. (2015). Negative influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics. in Cellulose
Springer, Dordrecht., 22(2), 1365-1378.
https://doi.org/10.1007/s10570-015-0549-7

Lazić VM, Radoičić MB, Šaponjić Z, Radetić T, Vodnik V, Nikolić S, Dimitrijević S, Radetić M. Negative influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics. in Cellulose. 2015;22(2):1365-1378.
doi:10.1007/s10570-015-0549-7 .

Lazić, Vesna M., Radoičić, Marija B., Šaponjić, Zoran, Radetić, Tamara, Vodnik, Vesna, Nikolić, Svetlana, Dimitrijević, Suzana, Radetić, Maja, "Negative influence of Ag and TiO2 nanoparticles on biodegradation of cotton fabrics" in Cellulose, 22, no. 2 (2015):1365-1378,
https://doi.org/10.1007/s10570-015-0549-7 . .

TY  - JOUR
AU  - Marković, Darka
AU  - Šaponjić, Zoran
AU  - Radoičić, Marija B.
AU  - Radetić, Tamara
AU  - Vodnik, Vesna
AU  - Potkonjak, Branislav
AU  - Radetić, Maja
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3050
AB  - This study discusses the possibility of using corona pre-treated polypropylene (PP) non-woven fabric as a support for immobilization of colloidal TiO2 and Ag nanoparticles in order to remove dye C.I. Acid Orange 7 from aqueous solution. Dye removal efficiency by sonocatalysis, photocatalysis and sonophotocatalysis was evaluated on corona pre-treated fabric loaded with TiO2 nanoparticles, corona pre-treated fabric double loaded with TiO2 nanoparticles and corona pre-treated fabrics loaded with TiO2 nanoparticles before and after deposition of Ag nanoparticles. In addition, the stability of PP non-woven fabric during these processes was investigated. The substrates were characterized by SEM, EDX and AAS analyses. The change of the dye concentration was evaluated by UV-VIS spectrophotometry. Unlike sonocatalysis and photocatalysis, complete dye removal from both solution and non-woven fabric was obtained already after 240-270 min of sonophotocatalysis. Corona pre-treated PP non-woven fabric loaded with Ag nanoparticles prior to deposition of TiO2 nanoparticles provided excellent degradation efficiency and superior reusability. Sonophotocatalytic degradation of dye in the presence of all investigated samples was the most prominent in acidic conditions. Although this nanocomposite system ensured fast discoloration of dye solution, TOC values of water measured after sonophotocatalysis were not satisfactory because of PP degradation. Therefore, it is suggested to include TOC evaluation in each case study where different supports for TiO2 nanoparticles are used since these nanoparticles may guarantee the dye removal from solution but the stability of support could be problematic causing even more serious environmental impact.
PB  - Elsevier, Amsterdam
T2  - Ultrasonics Sonochemistry
T1  - Sonophotocatalytic degradation of dye CI Acid Orange 7 by TiO2 and Ag nanoparticles immobilized on corona pretreated polypropylene non-woven fabric
EP  - 229
SP  - 221
VL  - 24
DO  - 10.1016/j.ultsonch.2014.11.017
ER  - 

@article{
author = "Marković, Darka and Šaponjić, Zoran and Radoičić, Marija B. and Radetić, Tamara and Vodnik, Vesna and Potkonjak, Branislav and Radetić, Maja",
year = "2015",
abstract = "This study discusses the possibility of using corona pre-treated polypropylene (PP) non-woven fabric as a support for immobilization of colloidal TiO2 and Ag nanoparticles in order to remove dye C.I. Acid Orange 7 from aqueous solution. Dye removal efficiency by sonocatalysis, photocatalysis and sonophotocatalysis was evaluated on corona pre-treated fabric loaded with TiO2 nanoparticles, corona pre-treated fabric double loaded with TiO2 nanoparticles and corona pre-treated fabrics loaded with TiO2 nanoparticles before and after deposition of Ag nanoparticles. In addition, the stability of PP non-woven fabric during these processes was investigated. The substrates were characterized by SEM, EDX and AAS analyses. The change of the dye concentration was evaluated by UV-VIS spectrophotometry. Unlike sonocatalysis and photocatalysis, complete dye removal from both solution and non-woven fabric was obtained already after 240-270 min of sonophotocatalysis. Corona pre-treated PP non-woven fabric loaded with Ag nanoparticles prior to deposition of TiO2 nanoparticles provided excellent degradation efficiency and superior reusability. Sonophotocatalytic degradation of dye in the presence of all investigated samples was the most prominent in acidic conditions. Although this nanocomposite system ensured fast discoloration of dye solution, TOC values of water measured after sonophotocatalysis were not satisfactory because of PP degradation. Therefore, it is suggested to include TOC evaluation in each case study where different supports for TiO2 nanoparticles are used since these nanoparticles may guarantee the dye removal from solution but the stability of support could be problematic causing even more serious environmental impact.",
publisher = "Elsevier, Amsterdam",
journal = "Ultrasonics Sonochemistry",
title = "Sonophotocatalytic degradation of dye CI Acid Orange 7 by TiO2 and Ag nanoparticles immobilized on corona pretreated polypropylene non-woven fabric",
pages = "229-221",
volume = "24",
doi = "10.1016/j.ultsonch.2014.11.017"
}

Marković, D., Šaponjić, Z., Radoičić, M. B., Radetić, T., Vodnik, V., Potkonjak, B.,& Radetić, M.. (2015). Sonophotocatalytic degradation of dye CI Acid Orange 7 by TiO2 and Ag nanoparticles immobilized on corona pretreated polypropylene non-woven fabric. in Ultrasonics Sonochemistry
Elsevier, Amsterdam., 24, 221-229.
https://doi.org/10.1016/j.ultsonch.2014.11.017

Marković D, Šaponjić Z, Radoičić MB, Radetić T, Vodnik V, Potkonjak B, Radetić M. Sonophotocatalytic degradation of dye CI Acid Orange 7 by TiO2 and Ag nanoparticles immobilized on corona pretreated polypropylene non-woven fabric. in Ultrasonics Sonochemistry. 2015;24:221-229.
doi:10.1016/j.ultsonch.2014.11.017 .

Marković, Darka, Šaponjić, Zoran, Radoičić, Marija B., Radetić, Tamara, Vodnik, Vesna, Potkonjak, Branislav, Radetić, Maja, "Sonophotocatalytic degradation of dye CI Acid Orange 7 by TiO2 and Ag nanoparticles immobilized on corona pretreated polypropylene non-woven fabric" in Ultrasonics Sonochemistry, 24 (2015):221-229,
https://doi.org/10.1016/j.ultsonch.2014.11.017 . .

TY  - JOUR
AU  - Bogdanović, Una
AU  - Vodnik, Vesna
AU  - Mitrić, Miodrag
AU  - Dimitrijević, Suzana
AU  - Škapin, Srečo Davor
AU  - Zunić, Vojka
AU  - Budimir, Milica
AU  - Stoiljković, Milovan
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3040
AB  - This study explores different mechanisms of antimicrobial action by designing hybrid nanomaterials that provide a new approach in the fight against resistant microbes. Here, we present a cheap copper-polyaniline (Cu-PANI) nanocomposite material with enhanced antimicrobial properties, prepared by simple in situ polymerization method, when polymer and metal nanoparticles are produced simultaneously. The copper nanoparticles (CuNPs) are uniformly dispersed in the polymer and have a narrow size distribution (dav = 6 nm). We found that CuNPs and PANI act synergistically against three strains, Escherichia coli, Staphylococcus aureus, and Candida albicans, and resulting nanocomposite exhibits higher antimicrobial activity than any component acting alone. Before using the colony counting method to quantify its time and concentration antimicrobial activity, different techniques (UV-visible spectroscopy, transmission electron microscopy, scanning electron microscope, field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrophotometry, and inductively coupled plasma optical emission spectrometry) were used to identify the optical, structural, and chemical aspects of the formed Cu-PANI nanocomposite. The antimicrobial activity of this nanocomposite shows that the microbial growth has been fully inhibited; moreover, some of the tested microbes were killed. Atomic force microscopy revealed dramatic changes in morphology of tested cells due to disruption of their cell wall integrity after incubation with Cu-PANI nanocomposite.
PB  - Amer Chemical Soc, Washington
T2  - ACS Applied Materials & Interfaces
T1  - Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite
EP  - 1966
IS  - 3
SP  - 1955
VL  - 7
DO  - 10.1021/am507746m
ER  - 

@article{
author = "Bogdanović, Una and Vodnik, Vesna and Mitrić, Miodrag and Dimitrijević, Suzana and Škapin, Srečo Davor and Zunić, Vojka and Budimir, Milica and Stoiljković, Milovan",
year = "2015",
abstract = "This study explores different mechanisms of antimicrobial action by designing hybrid nanomaterials that provide a new approach in the fight against resistant microbes. Here, we present a cheap copper-polyaniline (Cu-PANI) nanocomposite material with enhanced antimicrobial properties, prepared by simple in situ polymerization method, when polymer and metal nanoparticles are produced simultaneously. The copper nanoparticles (CuNPs) are uniformly dispersed in the polymer and have a narrow size distribution (dav = 6 nm). We found that CuNPs and PANI act synergistically against three strains, Escherichia coli, Staphylococcus aureus, and Candida albicans, and resulting nanocomposite exhibits higher antimicrobial activity than any component acting alone. Before using the colony counting method to quantify its time and concentration antimicrobial activity, different techniques (UV-visible spectroscopy, transmission electron microscopy, scanning electron microscope, field emission scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrophotometry, and inductively coupled plasma optical emission spectrometry) were used to identify the optical, structural, and chemical aspects of the formed Cu-PANI nanocomposite. The antimicrobial activity of this nanocomposite shows that the microbial growth has been fully inhibited; moreover, some of the tested microbes were killed. Atomic force microscopy revealed dramatic changes in morphology of tested cells due to disruption of their cell wall integrity after incubation with Cu-PANI nanocomposite.",
publisher = "Amer Chemical Soc, Washington",
journal = "ACS Applied Materials & Interfaces",
title = "Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite",
pages = "1966-1955",
number = "3",
volume = "7",
doi = "10.1021/am507746m"
}

Bogdanović, U., Vodnik, V., Mitrić, M., Dimitrijević, S., Škapin, S. D., Zunić, V., Budimir, M.,& Stoiljković, M.. (2015). Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite. in ACS Applied Materials & Interfaces
Amer Chemical Soc, Washington., 7(3), 1955-1966.
https://doi.org/10.1021/am507746m

Bogdanović U, Vodnik V, Mitrić M, Dimitrijević S, Škapin SD, Zunić V, Budimir M, Stoiljković M. Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite. in ACS Applied Materials & Interfaces. 2015;7(3):1955-1966.
doi:10.1021/am507746m .

Bogdanović, Una, Vodnik, Vesna, Mitrić, Miodrag, Dimitrijević, Suzana, Škapin, Srečo Davor, Zunić, Vojka, Budimir, Milica, Stoiljković, Milovan, "Nanomaterial with High Antimicrobial Efficacy-Copper/Polyaniline Nanocomposite" in ACS Applied Materials & Interfaces, 7, no. 3 (2015):1955-1966,
https://doi.org/10.1021/am507746m . .

TY  - JOUR
AU  - Pajović, Jelena D.
AU  - Dojčilović, Radovan
AU  - Božanić, Dušan K.
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Dimitrijević-Branković, Suzana
AU  - Vodnik, Vesna
AU  - Milosavljević, Aleksandar R.
AU  - Piscopiello, Emanuela
AU  - Luyt, Adriaan S.
AU  - Đoković, Vladimir
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3102
AB  - Biocompatible fluorescent nanostructures were prepared by a functionalization of gold nanoparticles with the amino acid tryptophan. The gold-tryptophan bioconjugates were investigated by TEM and HRTEM and various spectroscopy methods (XPS, FTIR, UV-vis and photoluminescence). It was found that the gold nanoparticles, initially 8 nm in diameter, aggregate in the presence of the amino acid. From the XPS and FTIR spectroscopy results, it was concluded that the tryptophan gold interactions mainly take place via indole and carboxyl groups. Although the indole group is involved in the interaction with the gold surfaces, the tryptophan-gold hybrids showed strong fluorescence due to the presence of multilayers of tryptophan. Deep ultra violet (DUV) imaging performed at the SOLEIL synchrotron showed that It is possible to detect these hybrid nanostructures within Escherichia coli cells.
PB  - Elsevier Science Bv, Amsterdam
T2  - Colloids and Surfaces B-Biointerfaces
T1  - Tryptophan-functionalized gold nanoparticles for deep UV imaging of microbial cells
EP  - 750
SP  - 742
VL  - 135
DO  - 10.1016/j.colsurfb.2015.08.050
ER  - 

@article{
author = "Pajović, Jelena D. and Dojčilović, Radovan and Božanić, Dušan K. and Kascakova, Slavka and Refregiers, Matthieu and Dimitrijević-Branković, Suzana and Vodnik, Vesna and Milosavljević, Aleksandar R. and Piscopiello, Emanuela and Luyt, Adriaan S. and Đoković, Vladimir",
year = "2015",
abstract = "Biocompatible fluorescent nanostructures were prepared by a functionalization of gold nanoparticles with the amino acid tryptophan. The gold-tryptophan bioconjugates were investigated by TEM and HRTEM and various spectroscopy methods (XPS, FTIR, UV-vis and photoluminescence). It was found that the gold nanoparticles, initially 8 nm in diameter, aggregate in the presence of the amino acid. From the XPS and FTIR spectroscopy results, it was concluded that the tryptophan gold interactions mainly take place via indole and carboxyl groups. Although the indole group is involved in the interaction with the gold surfaces, the tryptophan-gold hybrids showed strong fluorescence due to the presence of multilayers of tryptophan. Deep ultra violet (DUV) imaging performed at the SOLEIL synchrotron showed that It is possible to detect these hybrid nanostructures within Escherichia coli cells.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces B-Biointerfaces",
title = "Tryptophan-functionalized gold nanoparticles for deep UV imaging of microbial cells",
pages = "750-742",
volume = "135",
doi = "10.1016/j.colsurfb.2015.08.050"
}

Pajović, J. D., Dojčilović, R., Božanić, D. K., Kascakova, S., Refregiers, M., Dimitrijević-Branković, S., Vodnik, V., Milosavljević, A. R., Piscopiello, E., Luyt, A. S.,& Đoković, V.. (2015). Tryptophan-functionalized gold nanoparticles for deep UV imaging of microbial cells. in Colloids and Surfaces B-Biointerfaces
Elsevier Science Bv, Amsterdam., 135, 742-750.
https://doi.org/10.1016/j.colsurfb.2015.08.050

Pajović JD, Dojčilović R, Božanić DK, Kascakova S, Refregiers M, Dimitrijević-Branković S, Vodnik V, Milosavljević AR, Piscopiello E, Luyt AS, Đoković V. Tryptophan-functionalized gold nanoparticles for deep UV imaging of microbial cells. in Colloids and Surfaces B-Biointerfaces. 2015;135:742-750.
doi:10.1016/j.colsurfb.2015.08.050 .

Pajović, Jelena D., Dojčilović, Radovan, Božanić, Dušan K., Kascakova, Slavka, Refregiers, Matthieu, Dimitrijević-Branković, Suzana, Vodnik, Vesna, Milosavljević, Aleksandar R., Piscopiello, Emanuela, Luyt, Adriaan S., Đoković, Vladimir, "Tryptophan-functionalized gold nanoparticles for deep UV imaging of microbial cells" in Colloids and Surfaces B-Biointerfaces, 135 (2015):742-750,
https://doi.org/10.1016/j.colsurfb.2015.08.050 . .

TY  - CHAP
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis
AU  - Džunuzović, Jasna
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2565
AB  - Polystyrene, one of the most important material in the modern plastic industry and one of the major synthetic polymer in use today, offers an extremely broad range of applications, due to its good physical properties and low-cost. Significant change of mechanical, rheological, thermal, optical, fire retardancy and barrier properties of polystyrene has been obtained by its combination with different nanoparticles. Due to the extremely high interface area between nanoparticles and polystyrene, some new properties could also be generated, which are often necessary to provide in order to meet current and future demands for various significant applications in different fields. In this review, recent advances on nanocomposites based on polystyrene and different kinds of nanoparticles will be presented through the results obtained by authors of this chapter and results given in other literature reports. This chapter reviews the current understanding of polystyrene based nanocomposites with three particular topics: (i) the preparation conditions of nanoparticles for their efficient, homogeneous incorporation in polystyrene matrix, (ii) different approaches for the synthesis of nanocomposites based on polystyrene and (iii) the influence of the type, size and shape of incorporated nanoparticles on the properties of the polystyrene based nanocomposites. The potential applications of these nanocomposites are also highlighted.
T2  - Polystyrene: Synthesis, Characteristics and Applications
T1  - Synthesis and characterization of polystyrene based nanocomposites
EP  - 240
SP  - 201
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2565
ER  - 

@inbook{
author = "Vodnik, Vesna and Džunuzović, Enis and Džunuzović, Jasna",
year = "2014",
abstract = "Polystyrene, one of the most important material in the modern plastic industry and one of the major synthetic polymer in use today, offers an extremely broad range of applications, due to its good physical properties and low-cost. Significant change of mechanical, rheological, thermal, optical, fire retardancy and barrier properties of polystyrene has been obtained by its combination with different nanoparticles. Due to the extremely high interface area between nanoparticles and polystyrene, some new properties could also be generated, which are often necessary to provide in order to meet current and future demands for various significant applications in different fields. In this review, recent advances on nanocomposites based on polystyrene and different kinds of nanoparticles will be presented through the results obtained by authors of this chapter and results given in other literature reports. This chapter reviews the current understanding of polystyrene based nanocomposites with three particular topics: (i) the preparation conditions of nanoparticles for their efficient, homogeneous incorporation in polystyrene matrix, (ii) different approaches for the synthesis of nanocomposites based on polystyrene and (iii) the influence of the type, size and shape of incorporated nanoparticles on the properties of the polystyrene based nanocomposites. The potential applications of these nanocomposites are also highlighted.",
journal = "Polystyrene: Synthesis, Characteristics and Applications",
booktitle = "Synthesis and characterization of polystyrene based nanocomposites",
pages = "240-201",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2565"
}

Vodnik, V., Džunuzović, E.,& Džunuzović, J.. (2014). Synthesis and characterization of polystyrene based nanocomposites. in Polystyrene: Synthesis, Characteristics and Applications, 201-240.
https://hdl.handle.net/21.15107/rcub_technorep_2565

Vodnik V, Džunuzović E, Džunuzović J. Synthesis and characterization of polystyrene based nanocomposites. in Polystyrene: Synthesis, Characteristics and Applications. 2014;:201-240.
https://hdl.handle.net/21.15107/rcub_technorep_2565 .

Vodnik, Vesna, Džunuzović, Enis, Džunuzović, Jasna, "Synthesis and characterization of polystyrene based nanocomposites" in Polystyrene: Synthesis, Characteristics and Applications (2014):201-240,
https://hdl.handle.net/21.15107/rcub_technorep_2565 .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Džunuzović, Enis
AU  - Vodnik, Vesna
AU  - Dimitrijević, Suzana
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2789
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 %.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles
EP  - 6844
IS  - 19
SP  - 6838
VL  - 49
DO  - 10.1007/s10853-014-8386-x
ER  - 

@article{
author = "Vukoje, Ivana D. and Džunuzović, Enis and Vodnik, Vesna and Dimitrijević, Suzana 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 %.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Synthesis, characterization, and antimicrobial activity of poly(GMA-co-EGDMA) polymer decorated with silver nanoparticles",
pages = "6844-6838",
number = "19",
volume = "49",
doi = "10.1007/s10853-014-8386-x"
}

Vukoje, I. D., Džunuzović, E., Vodnik, V., Dimitrijević, S., 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
Springer, New York., 49(19), 6838-6844.
https://doi.org/10.1007/s10853-014-8386-x

Vukoje ID, Džunuzović E, Vodnik V, Dimitrijević S, 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, Vodnik, Vesna, Dimitrijević, Suzana, 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 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Vodnik, Vesna
AU  - Džunuzović, Jasna
AU  - Džunuzović, Enis
AU  - Marinović-Cincović, Milena
AU  - Jeremić, Katarina B.
AU  - Nedeljković, Jovan
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2796
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.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Materials Research Bulletin
T1  - Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization
EP  - 439
SP  - 434
VL  - 49
DO  - 10.1016/j.materresbull.2013.09.029
ER  - 

@article{
author = "Vukoje, Ivana D. and Vodnik, Vesna and Džunuzović, Jasna and Džunuzović, Enis 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.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Materials Research Bulletin",
title = "Characterization of silver/polystyrene nanocomposites prepared by in situ bulk radical polymerization",
pages = "439-434",
volume = "49",
doi = "10.1016/j.materresbull.2013.09.029"
}

Vukoje, I. D., Vodnik, V., Džunuzović, J., Džunuzović, E., 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
Pergamon-Elsevier Science Ltd, Oxford., 49, 434-439.
https://doi.org/10.1016/j.materresbull.2013.09.029

Vukoje ID, Vodnik V, Džunuzović J, Džunuzović E, 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, Džunuzović, Enis, 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 . .

TY  - JOUR
AU  - Vukoje, Ivana D.
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Mitrić, Miodrag
AU  - Jokić, Bojan
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
AU  - Radetić, Maja
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2863
AB  - The effect of cotton fabric pretreatment with biopolymer chitosan (CHT) on deposition of colloidal triangular silver nanoplates was studied. Also, the influence of deposited silver nanoparticles on color and antimicrobial activity of cotton fabrics was evaluated. Characterization of colloidal silver nanoparticles as well as silver nanoparticles deposited on cotton fabrics was performed using electron microscopy (TEM and FESEM), XRD analysis, atomic absorption spectroscopy, UV-Vis absorption, and reflectance spectroscopy. The cotton fabric turned from white to blue color upon deposition of triangular silver nanoplates. Antimicrobial activity of CHT pretreated cotton fabric impregnated with silver nanoparticles was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungi Candida albicans. Deposited silver nanoparticles imparted excellent antimicrobial properties to cotton fabric. The standard sterilization procedure of cotton fabric for antimicrobial activity testing resulted in color change of the fabric from blue to yellow. This color change is most likely consequence of transformation of triangular silver nanoplates into nanodiscs and/or their agglomeration into spheroids.
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan
EP  - 4460
IS  - 13
SP  - 4453
VL  - 49
DO  - 10.1007/s10853-014-8142-2
ER  - 

@article{
author = "Vukoje, Ivana D. and Lazić, Vesna M. and Vodnik, Vesna and Mitrić, Miodrag and Jokić, Bojan and Ahrenkiel, Scott Phillip and Nedeljković, Jovan and Radetić, Maja",
year = "2014",
abstract = "The effect of cotton fabric pretreatment with biopolymer chitosan (CHT) on deposition of colloidal triangular silver nanoplates was studied. Also, the influence of deposited silver nanoparticles on color and antimicrobial activity of cotton fabrics was evaluated. Characterization of colloidal silver nanoparticles as well as silver nanoparticles deposited on cotton fabrics was performed using electron microscopy (TEM and FESEM), XRD analysis, atomic absorption spectroscopy, UV-Vis absorption, and reflectance spectroscopy. The cotton fabric turned from white to blue color upon deposition of triangular silver nanoplates. Antimicrobial activity of CHT pretreated cotton fabric impregnated with silver nanoparticles was tested against Gram-negative bacteria Escherichia coli, Gram-positive bacteria Staphylococcus aureus, and fungi Candida albicans. Deposited silver nanoparticles imparted excellent antimicrobial properties to cotton fabric. The standard sterilization procedure of cotton fabric for antimicrobial activity testing resulted in color change of the fabric from blue to yellow. This color change is most likely consequence of transformation of triangular silver nanoplates into nanodiscs and/or their agglomeration into spheroids.",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan",
pages = "4460-4453",
number = "13",
volume = "49",
doi = "10.1007/s10853-014-8142-2"
}

Vukoje, I. D., Lazić, V. M., Vodnik, V., Mitrić, M., Jokić, B., Ahrenkiel, S. P., Nedeljković, J.,& Radetić, M.. (2014). The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan. in Journal of Materials Science
Springer, New York., 49(13), 4453-4460.
https://doi.org/10.1007/s10853-014-8142-2

Vukoje ID, Lazić VM, Vodnik V, Mitrić M, Jokić B, Ahrenkiel SP, Nedeljković J, Radetić M. The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan. in Journal of Materials Science. 2014;49(13):4453-4460.
doi:10.1007/s10853-014-8142-2 .

Vukoje, Ivana D., Lazić, Vesna M., Vodnik, Vesna, Mitrić, Miodrag, Jokić, Bojan, Ahrenkiel, Scott Phillip, Nedeljković, Jovan, Radetić, Maja, "The influence of triangular silver nanoplates on antimicrobial activity and color of cotton fabrics pretreated with chitosan" in Journal of Materials Science, 49, no. 13 (2014):4453-4460,
https://doi.org/10.1007/s10853-014-8142-2 . .

TY  - JOUR
AU  - Bogdanović, Una
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Dimitrijević, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2810
AB  - Copper (Cu) hydrosol containing small nanoparticles (NPs) (similar to 5 nm) with narrow size distribution were used to investigate antimicrobial activity toward representative microorganisms of public concern (Escherichia coli, Staphylococcus aureus and Candida albicans). Microbial reduction measurements were performed as a function of CuNPs concentration, after 2 h of their contact. Surface and morphological alterations of the strains exposed to the Cu NPs were studied on the cellular level using an atomic force microscope (AFM).
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Letters
T1  - Copper nanoparticles with high antimicrobial activity
EP  - 78
SP  - 75
VL  - 128
DO  - 10.1016/j.matlet.2014.04.106
ER  - 

@article{
author = "Bogdanović, Una and Lazić, Vesna M. and Vodnik, Vesna and Budimir, Milica and Marković, Zoran M. and Dimitrijević, Suzana",
year = "2014",
abstract = "Copper (Cu) hydrosol containing small nanoparticles (NPs) (similar to 5 nm) with narrow size distribution were used to investigate antimicrobial activity toward representative microorganisms of public concern (Escherichia coli, Staphylococcus aureus and Candida albicans). Microbial reduction measurements were performed as a function of CuNPs concentration, after 2 h of their contact. Surface and morphological alterations of the strains exposed to the Cu NPs were studied on the cellular level using an atomic force microscope (AFM).",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Letters",
title = "Copper nanoparticles with high antimicrobial activity",
pages = "78-75",
volume = "128",
doi = "10.1016/j.matlet.2014.04.106"
}

Bogdanović, U., Lazić, V. M., Vodnik, V., Budimir, M., Marković, Z. M.,& Dimitrijević, S.. (2014). Copper nanoparticles with high antimicrobial activity. in Materials Letters
Elsevier Science Bv, Amsterdam., 128, 75-78.
https://doi.org/10.1016/j.matlet.2014.04.106

Bogdanović U, Lazić VM, Vodnik V, Budimir M, Marković ZM, Dimitrijević S. Copper nanoparticles with high antimicrobial activity. in Materials Letters. 2014;128:75-78.
doi:10.1016/j.matlet.2014.04.106 .

Bogdanović, Una, Lazić, Vesna M., Vodnik, Vesna, Budimir, Milica, Marković, Zoran M., Dimitrijević, Suzana, "Copper nanoparticles with high antimicrobial activity" in Materials Letters, 128 (2014):75-78,
https://doi.org/10.1016/j.matlet.2014.04.106 . .

TY  - JOUR
AU  - Lazić, Vesna M.
AU  - Vodnik, Vesna
AU  - Nedeljković, Jovan
AU  - Šaponjić, Zoran
AU  - Jovančić, Petar
AU  - Radetić, Maja
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2255
AB  - Antibacterial and calorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles This study discusses the relationship between loading of cotton fabric with colloidal Ag nanoparticles and dyeing with direct dyes - C.I. Direct Yellow 86, C.I. Direct Red 79 and C.I. Direct Blue 78. The influence of order of Ag nanoparticles loading and dyeing of cotton fabrics as well as the concentration of applied dye on their antibacterial activity and colour change were studied. Antibacterial activity was tested against gram-negative bacterium E. coli and Gram-positive bacterium S. aureus. Dyed cotton fabrics loaded with Ag nanoparticles exhibited excellent antibacterial properties independently of dye concentration and order of dyeing and loading of Ag nanoparticles. Colour change of cotton fabrics due to presence of Ag nanoparticles is highly influenced by the order of operations, applied dye and dye concentration. The stability of these nanocomposite textile materials was tested in acidic and alkaline artificial sweat. The release of silver occurred independently of the pH value of the sweat.
PB  - Inst Natl Cercetare-Dezvoltare Textile Pielarie-Bucuresti, Bucuresti
T2  - Industria Textila
T1  - Antibacterial and colorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles
EP  - 97
IS  - 2
SP  - 89
VL  - 64
UR  - https://hdl.handle.net/21.15107/rcub_vinar_5477
ER  - 

@article{
author = "Lazić, Vesna M. and Vodnik, Vesna and Nedeljković, Jovan and Šaponjić, Zoran and Jovančić, Petar and Radetić, Maja",
year = "2013",
abstract = "Antibacterial and calorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles This study discusses the relationship between loading of cotton fabric with colloidal Ag nanoparticles and dyeing with direct dyes - C.I. Direct Yellow 86, C.I. Direct Red 79 and C.I. Direct Blue 78. The influence of order of Ag nanoparticles loading and dyeing of cotton fabrics as well as the concentration of applied dye on their antibacterial activity and colour change were studied. Antibacterial activity was tested against gram-negative bacterium E. coli and Gram-positive bacterium S. aureus. Dyed cotton fabrics loaded with Ag nanoparticles exhibited excellent antibacterial properties independently of dye concentration and order of dyeing and loading of Ag nanoparticles. Colour change of cotton fabrics due to presence of Ag nanoparticles is highly influenced by the order of operations, applied dye and dye concentration. The stability of these nanocomposite textile materials was tested in acidic and alkaline artificial sweat. The release of silver occurred independently of the pH value of the sweat.",
publisher = "Inst Natl Cercetare-Dezvoltare Textile Pielarie-Bucuresti, Bucuresti",
journal = "Industria Textila",
title = "Antibacterial and colorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles",
pages = "97-89",
number = "2",
volume = "64",
url = "https://hdl.handle.net/21.15107/rcub_vinar_5477"
}

Lazić, V. M., Vodnik, V., Nedeljković, J., Šaponjić, Z., Jovančić, P.,& Radetić, M.. (2013). Antibacterial and colorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles. in Industria Textila
Inst Natl Cercetare-Dezvoltare Textile Pielarie-Bucuresti, Bucuresti., 64(2), 89-97.
https://hdl.handle.net/21.15107/rcub_vinar_5477

Lazić VM, Vodnik V, Nedeljković J, Šaponjić Z, Jovančić P, Radetić M. Antibacterial and colorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles. in Industria Textila. 2013;64(2):89-97.
https://hdl.handle.net/21.15107/rcub_vinar_5477 .

Lazić, Vesna M., Vodnik, Vesna, Nedeljković, Jovan, Šaponjić, Zoran, Jovančić, Petar, Radetić, Maja, "Antibacterial and colorimetric evaluation of cotton fabrics dyed with direct dyes and loaded with Ag nanoparticles" in Industria Textila, 64, no. 2 (2013):89-97,
https://hdl.handle.net/21.15107/rcub_vinar_5477 .

TY  - JOUR
AU  - Lazić, Vesna
AU  - Šaponjić, Zoran
AU  - Vodnik, Vesna
AU  - Dimitrijević, Suzana
AU  - Jovančić, Petar
AU  - Nedeljković, Jovan
AU  - Radetić, Maja
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2098
AB  - This study compares the effect of colloidal silver nanoparticles and the commercial RUCO-BAC AGP agent with silver chloride as the active component on the antibacterial activity of dyed cotton fabrics. Cotton fabrics were dyed with vat dyes Bezanthren Olive T and Bezanthren Grey FFB. The antibacterial activities of the silver-loaded dyed cotton fabrics were tested against the Gram-positive bacterium Staphylococcus aureus and the Gram-negative bacterium Escherichia coli. Unlike RUCO-BAC AGP, the synthesized silver nanoparticles deposited onto the dyed cotton fabrics provided maximum bacteria reduction, independent of the applied dye. The stability of the modified cotton fabrics was analyzed in artificial sweat at pH 5.5 and 8.0. Approximately the same amount of silver was released from the differently modified cotton fabrics in artificial sweat. Larger amounts of silver were released in the sweat at pH 8.0.
AB  - U ovom radu se porede efekti koloidnih nanočestica srebra i komercijalnog antimikrobnog agensa RUCO-BAC AGP sa srebro-hloridom kao aktivnom komponentom na antibakterijsku aktivnost bojene pamučne tkanine. Pamučne tkanine su bojene redukcionim bojama Bezanthren olive T i Bezanthren green FFB. Antibakterijska aktivnost srebra je testirana prema Gram-pozitivnoj bakteriji Staphylococcus aureus i Gram-negativnoj bakteriji Escherichia coli. Za razliku od RUCO-BAC AGP, sintetisane nanočestice srebra deponovane na obojenu pamučnu tkaninu su obezbedile maksimum bakterijske redukcije nezavisno od primenjene boje. Stabilnost modifikovanih pamučnih tkanina je analizirana u veštačkom znoju pri pH 5,5 i 8,0. Gotovo ista količina srebra se oslobađa sa različito modifikovanih pamučnih tkanina u veštačkom znoju. Veća količina srebra se oslobađa u znoju pri pH 8,0.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - A study of the antibacterial activity and stability of dyed cotton fabrics modified with different forms of silver
T1  - Ispitivanje antibakterijske aktivnosti i stabilnosti obojene pamučne tkanine modifikovane različitim formama srebra
EP  - 234
IS  - 2
SP  - 225
VL  - 77
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2098
ER  - 

@article{
author = "Lazić, Vesna and Šaponjić, Zoran and Vodnik, Vesna and Dimitrijević, Suzana and Jovančić, Petar and Nedeljković, Jovan and Radetić, Maja",
year = "2012",
abstract = "This study compares the effect of colloidal silver nanoparticles and the commercial RUCO-BAC AGP agent with silver chloride as the active component on the antibacterial activity of dyed cotton fabrics. Cotton fabrics were dyed with vat dyes Bezanthren Olive T and Bezanthren Grey FFB. The antibacterial activities of the silver-loaded dyed cotton fabrics were tested against the Gram-positive bacterium Staphylococcus aureus and the Gram-negative bacterium Escherichia coli. Unlike RUCO-BAC AGP, the synthesized silver nanoparticles deposited onto the dyed cotton fabrics provided maximum bacteria reduction, independent of the applied dye. The stability of the modified cotton fabrics was analyzed in artificial sweat at pH 5.5 and 8.0. Approximately the same amount of silver was released from the differently modified cotton fabrics in artificial sweat. Larger amounts of silver were released in the sweat at pH 8.0., U ovom radu se porede efekti koloidnih nanočestica srebra i komercijalnog antimikrobnog agensa RUCO-BAC AGP sa srebro-hloridom kao aktivnom komponentom na antibakterijsku aktivnost bojene pamučne tkanine. Pamučne tkanine su bojene redukcionim bojama Bezanthren olive T i Bezanthren green FFB. Antibakterijska aktivnost srebra je testirana prema Gram-pozitivnoj bakteriji Staphylococcus aureus i Gram-negativnoj bakteriji Escherichia coli. Za razliku od RUCO-BAC AGP, sintetisane nanočestice srebra deponovane na obojenu pamučnu tkaninu su obezbedile maksimum bakterijske redukcije nezavisno od primenjene boje. Stabilnost modifikovanih pamučnih tkanina je analizirana u veštačkom znoju pri pH 5,5 i 8,0. Gotovo ista količina srebra se oslobađa sa različito modifikovanih pamučnih tkanina u veštačkom znoju. Veća količina srebra se oslobađa u znoju pri pH 8,0.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "A study of the antibacterial activity and stability of dyed cotton fabrics modified with different forms of silver, Ispitivanje antibakterijske aktivnosti i stabilnosti obojene pamučne tkanine modifikovane različitim formama srebra",
pages = "234-225",
number = "2",
volume = "77",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2098"
}

Lazić, V., Šaponjić, Z., Vodnik, V., Dimitrijević, S., Jovančić, P., Nedeljković, J.,& Radetić, M.. (2012). A study of the antibacterial activity and stability of dyed cotton fabrics modified with different forms of silver. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 77(2), 225-234.
https://hdl.handle.net/21.15107/rcub_technorep_2098

Lazić V, Šaponjić Z, Vodnik V, Dimitrijević S, Jovančić P, Nedeljković J, Radetić M. A study of the antibacterial activity and stability of dyed cotton fabrics modified with different forms of silver. in Journal of the Serbian Chemical Society. 2012;77(2):225-234.
https://hdl.handle.net/21.15107/rcub_technorep_2098 .

Lazić, Vesna, Šaponjić, Zoran, Vodnik, Vesna, Dimitrijević, Suzana, Jovančić, Petar, Nedeljković, Jovan, Radetić, Maja, "A study of the antibacterial activity and stability of dyed cotton fabrics modified with different forms of silver" in Journal of the Serbian Chemical Society, 77, no. 2 (2012):225-234,
https://hdl.handle.net/21.15107/rcub_technorep_2098 .

TY  - JOUR
AU  - Džunuzović, Jasna
AU  - Pergal, Marija
AU  - Vodnik, Vesna
AU  - Špírková, Milena
AU  - Poręba, Rafał
AU  - Jovanović, Slobodan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5694
AB  - Two series of crosslinked poly(urethane-ester-siloxane)s were synthesized from α,ω-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS- -EO), 4,4'-methylenediphenyl diisocyanate and Boltorn® hyperbranched polyesters of the second and third pseudo generation, by two-step polymerization in solution. The effect of the EO-PDMS-EO content and functionality of the applied crosslinking agent on the morphology and surface properties of the prepared poly(urethane-ester-siloxane)s was investigated by FTIR spectroscopy, small-angle X-ray scattering (SAXS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water absorption measurement. Different techniques (FTIR peak deconvolution, SAXS and AFM) revealed that decrease of the crosslinking agent functionality and EO-PDMS-EO content promotes microphase separation in the synthesized poly(urethane-ester-siloxane)s. SEM analysis and water absorption experiments showed that, due to the hydrophobic character of EO-PDMS-EO and its ability to migrate to the surface of poly(urethane-ester-siloxane)s, samples synthesized with higher EO-PDMS-EO content and crosslinking agents of lower functionality had more hydrophobic surfaces and better waterproof performances. The obtained results indicate that the synthesis of poly(urethane-ester-siloxane)s based on EO-PDMS-EO and Boltorn® hyperbranched polyesters leads to the creation of networks with interesting morphological and surface properties, which can be easily tailored by changing the content of EO-PDMS-EO segment or functionality of hyperbranched polyester.
AB  - U ovom radu sintetisane su dve serije umreženih poli(uretan-estar-siloksana) (PUS) korišćenjem α,ω-dihidroksi-(etilenoksid-poli(dimetilsiloksan)-etilenoksida) (EO-PDMS-EO), 4,4'-diizocijanatodifenilmetana i dva Boltorn® hiperrazgranata poliestra (HRP) druge i treće pseudo generacije kao umreživača. Svaka serija se sastoji od uzoraka koji imaju različiti udeo mekog segmenta (EO-PDMS-EO). Uticaj funkcionalnosti korišćenog HRP i udela mekog segmenta na morfologiju i površinska svojstva PUS ispitan je primenom FTIR spektroskopije, SAXS, AFM i SEM analize i merenjem količine apsorbovane vode. Pokazano je da sa smanjenjem funkcionalnosti umreživača i udela EO-PDMS-EO dolazi do povećanja stepena mikrofaznog razdvajanja kod sintetisanih PUS. Pored toga, uzorci PUS sa većim udelom mekog segmenta i sintetisani primenom HRP niže funkcionalnosti pokazuju bolju otpornost na vodu.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Investigation of the morphology and surface properties of crosslinked poly(urethane-ester-siloxane)s
T1  - Ispitivanje morfologije i površinskih svojstava umreženih poli(uretan-estar-siloksana)
EP  - 821
IS  - 6
SP  - 813
VL  - 66
DO  - 10.2298/HEMIND121004101D
ER  - 

@article{
author = "Džunuzović, Jasna and Pergal, Marija and Vodnik, Vesna and Špírková, Milena and Poręba, Rafał and Jovanović, Slobodan",
year = "2012",
abstract = "Two series of crosslinked poly(urethane-ester-siloxane)s were synthesized from α,ω-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS- -EO), 4,4'-methylenediphenyl diisocyanate and Boltorn® hyperbranched polyesters of the second and third pseudo generation, by two-step polymerization in solution. The effect of the EO-PDMS-EO content and functionality of the applied crosslinking agent on the morphology and surface properties of the prepared poly(urethane-ester-siloxane)s was investigated by FTIR spectroscopy, small-angle X-ray scattering (SAXS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and water absorption measurement. Different techniques (FTIR peak deconvolution, SAXS and AFM) revealed that decrease of the crosslinking agent functionality and EO-PDMS-EO content promotes microphase separation in the synthesized poly(urethane-ester-siloxane)s. SEM analysis and water absorption experiments showed that, due to the hydrophobic character of EO-PDMS-EO and its ability to migrate to the surface of poly(urethane-ester-siloxane)s, samples synthesized with higher EO-PDMS-EO content and crosslinking agents of lower functionality had more hydrophobic surfaces and better waterproof performances. The obtained results indicate that the synthesis of poly(urethane-ester-siloxane)s based on EO-PDMS-EO and Boltorn® hyperbranched polyesters leads to the creation of networks with interesting morphological and surface properties, which can be easily tailored by changing the content of EO-PDMS-EO segment or functionality of hyperbranched polyester., U ovom radu sintetisane su dve serije umreženih poli(uretan-estar-siloksana) (PUS) korišćenjem α,ω-dihidroksi-(etilenoksid-poli(dimetilsiloksan)-etilenoksida) (EO-PDMS-EO), 4,4'-diizocijanatodifenilmetana i dva Boltorn® hiperrazgranata poliestra (HRP) druge i treće pseudo generacije kao umreživača. Svaka serija se sastoji od uzoraka koji imaju različiti udeo mekog segmenta (EO-PDMS-EO). Uticaj funkcionalnosti korišćenog HRP i udela mekog segmenta na morfologiju i površinska svojstva PUS ispitan je primenom FTIR spektroskopije, SAXS, AFM i SEM analize i merenjem količine apsorbovane vode. Pokazano je da sa smanjenjem funkcionalnosti umreživača i udela EO-PDMS-EO dolazi do povećanja stepena mikrofaznog razdvajanja kod sintetisanih PUS. Pored toga, uzorci PUS sa većim udelom mekog segmenta i sintetisani primenom HRP niže funkcionalnosti pokazuju bolju otpornost na vodu.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Investigation of the morphology and surface properties of crosslinked poly(urethane-ester-siloxane)s, Ispitivanje morfologije i površinskih svojstava umreženih poli(uretan-estar-siloksana)",
pages = "821-813",
number = "6",
volume = "66",
doi = "10.2298/HEMIND121004101D"
}

Džunuzović, J., Pergal, M., Vodnik, V., Špírková, M., Poręba, R.,& Jovanović, S.. (2012). Investigation of the morphology and surface properties of crosslinked poly(urethane-ester-siloxane)s. in Hemijska industrija
Association of Chemical Engineers of Serbia., 66(6), 813-821.
https://doi.org/10.2298/HEMIND121004101D

Džunuzović J, Pergal M, Vodnik V, Špírková M, Poręba R, Jovanović S. Investigation of the morphology and surface properties of crosslinked poly(urethane-ester-siloxane)s. in Hemijska industrija. 2012;66(6):813-821.
doi:10.2298/HEMIND121004101D .

Džunuzović, Jasna, Pergal, Marija, Vodnik, Vesna, Špírková, Milena, Poręba, Rafał, Jovanović, Slobodan, "Investigation of the morphology and surface properties of crosslinked poly(urethane-ester-siloxane)s" in Hemijska industrija, 66, no. 6 (2012):813-821,
https://doi.org/10.2298/HEMIND121004101D . .

TY  - JOUR
AU  - Džunuzović, Jasna
AU  - Pergal, Marija
AU  - Poreba, Rafal
AU  - Vodnik, Vesna
AU  - Simonović, Branislav
AU  - Spirkova, Milena
AU  - Jovanovic, Slobodan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5666
AB  - Six polyurethane networks were synthesized from Boltorn (R) hyperbranched polyester of the second pseudo generation, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4'-methylenediphenyl diisocyanate. The effect of the EO-PDMS-EO content on the properties of prepared polyurethanes was investigated by dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), swelling measurements, water contact angle and water absorption. Different techniques (FTIR peak deconvolution, DMTA and SEM) revealed that decrease of EO-PDMS-EO content promotes microphase separation in the synthesized polyurethanes. Samples synthesized with higher EO-PDMS-EO content have more hydrophobic surface and better waterproof performances, but lower crosslinking density. TGA results suggest that thermal stability of the synthesized polyurethane networks in nitrogen is significantly affected by the mutual influence of the crosslinking density and EO-PDMS-EO content. The results obtained in this work indicate that the synthesis of polyurethanes based on hyperbranched polyester and EO-PDMS-EO leads to the creation of networks with good thermal, thermomechanical and surface properties.
PB  - Elsevier
T2  - Journal of Non-Crystalline Solids
T1  - Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester
EP  - 3169
IS  - 23
SP  - 3161
VL  - 358
DO  - 10.1016/j.jnoncrysol.2012.09.013
ER  - 

@article{
author = "Džunuzović, Jasna and Pergal, Marija and Poreba, Rafal and Vodnik, Vesna and Simonović, Branislav and Spirkova, Milena and Jovanovic, Slobodan",
year = "2012",
abstract = "Six polyurethane networks were synthesized from Boltorn (R) hyperbranched polyester of the second pseudo generation, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4'-methylenediphenyl diisocyanate. The effect of the EO-PDMS-EO content on the properties of prepared polyurethanes was investigated by dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), swelling measurements, water contact angle and water absorption. Different techniques (FTIR peak deconvolution, DMTA and SEM) revealed that decrease of EO-PDMS-EO content promotes microphase separation in the synthesized polyurethanes. Samples synthesized with higher EO-PDMS-EO content have more hydrophobic surface and better waterproof performances, but lower crosslinking density. TGA results suggest that thermal stability of the synthesized polyurethane networks in nitrogen is significantly affected by the mutual influence of the crosslinking density and EO-PDMS-EO content. The results obtained in this work indicate that the synthesis of polyurethanes based on hyperbranched polyester and EO-PDMS-EO leads to the creation of networks with good thermal, thermomechanical and surface properties.",
publisher = "Elsevier",
journal = "Journal of Non-Crystalline Solids",
title = "Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester",
pages = "3169-3161",
number = "23",
volume = "358",
doi = "10.1016/j.jnoncrysol.2012.09.013"
}

Džunuzović, J., Pergal, M., Poreba, R., Vodnik, V., Simonović, B., Spirkova, M.,& Jovanovic, S.. (2012). Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester. in Journal of Non-Crystalline Solids
Elsevier., 358(23), 3161-3169.
https://doi.org/10.1016/j.jnoncrysol.2012.09.013

Džunuzović J, Pergal M, Poreba R, Vodnik V, Simonović B, Spirkova M, Jovanovic S. Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester. in Journal of Non-Crystalline Solids. 2012;358(23):3161-3169.
doi:10.1016/j.jnoncrysol.2012.09.013 .

Džunuzović, Jasna, Pergal, Marija, Poreba, Rafal, Vodnik, Vesna, Simonović, Branislav, Spirkova, Milena, Jovanovic, Slobodan, "Analysis of dynamic mechanical, thermal and surface properties of poly(urethane-ester-siloxane) networks based on hyperbranched polyester" in Journal of Non-Crystalline Solids, 358, no. 23 (2012):3161-3169,
https://doi.org/10.1016/j.jnoncrysol.2012.09.013 . .

TY  - JOUR
AU  - Mihailović, Darka
AU  - Šaponjić, Zoran
AU  - Vodnik, Vesna
AU  - Potkonjak, Branislav
AU  - Jovančić, Petar
AU  - Nedeljković, Jovan
AU  - Radetić, Maja
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1889
AB  - This study is aimed to highlight the possibility of engineering the multifunctional textile nanocomposite material based on the polyester (PES) fabric modified with colloidal Ag and TiO2 nanoparticles (NPs). The effects of concentration of NPs as well as the order of Ag and TiO2 NPs loading on antimicrobial, UV protective, and photocatalytic properties of PES fabrics were examined. The antimicrobial activity of differently modified PES fabrics was tested against Gram-negative bacterium Escherichia coli, Gram-positive bacterium Staphylococcus aureus, and fungus Candida albicans. The concentration of Ag colloid and the order of Ag and TiO2 NPs loading considerably affected the antimicrobial efficiency of PES fabrics. The fabrics provided maximum UV protection upon surface modification with Ag and TiO2 NPs. Ag NPs enhanced Ag NPs enhanced the photodegradation activity of TiO2 NPs and total photodegradation of methylene blue was achieved after 24 hr of UV illumination.
PB  - Wiley, Hoboken
T2  - Polymers for Advanced Technologies
T1  - Multifunctional PES fabrics modified with colloidal Ag and TiO2 nanoparticles
EP  - 2249
IS  - 12
SP  - 2244
VL  - 22
DO  - 10.1002/pat.1752
ER  - 

@article{
author = "Mihailović, Darka and Šaponjić, Zoran and Vodnik, Vesna and Potkonjak, Branislav and Jovančić, Petar and Nedeljković, Jovan and Radetić, Maja",
year = "2011",
abstract = "This study is aimed to highlight the possibility of engineering the multifunctional textile nanocomposite material based on the polyester (PES) fabric modified with colloidal Ag and TiO2 nanoparticles (NPs). The effects of concentration of NPs as well as the order of Ag and TiO2 NPs loading on antimicrobial, UV protective, and photocatalytic properties of PES fabrics were examined. The antimicrobial activity of differently modified PES fabrics was tested against Gram-negative bacterium Escherichia coli, Gram-positive bacterium Staphylococcus aureus, and fungus Candida albicans. The concentration of Ag colloid and the order of Ag and TiO2 NPs loading considerably affected the antimicrobial efficiency of PES fabrics. The fabrics provided maximum UV protection upon surface modification with Ag and TiO2 NPs. Ag NPs enhanced Ag NPs enhanced the photodegradation activity of TiO2 NPs and total photodegradation of methylene blue was achieved after 24 hr of UV illumination.",
publisher = "Wiley, Hoboken",
journal = "Polymers for Advanced Technologies",
title = "Multifunctional PES fabrics modified with colloidal Ag and TiO2 nanoparticles",
pages = "2249-2244",
number = "12",
volume = "22",
doi = "10.1002/pat.1752"
}

Mihailović, D., Šaponjić, Z., Vodnik, V., Potkonjak, B., Jovančić, P., Nedeljković, J.,& Radetić, M.. (2011). Multifunctional PES fabrics modified with colloidal Ag and TiO2 nanoparticles. in Polymers for Advanced Technologies
Wiley, Hoboken., 22(12), 2244-2249.
https://doi.org/10.1002/pat.1752

Mihailović D, Šaponjić Z, Vodnik V, Potkonjak B, Jovančić P, Nedeljković J, Radetić M. Multifunctional PES fabrics modified with colloidal Ag and TiO2 nanoparticles. in Polymers for Advanced Technologies. 2011;22(12):2244-2249.
doi:10.1002/pat.1752 .

Mihailović, Darka, Šaponjić, Zoran, Vodnik, Vesna, Potkonjak, Branislav, Jovančić, Petar, Nedeljković, Jovan, Radetić, Maja, "Multifunctional PES fabrics modified with colloidal Ag and TiO2 nanoparticles" in Polymers for Advanced Technologies, 22, no. 12 (2011):2244-2249,
https://doi.org/10.1002/pat.1752 . .

TY  - JOUR
AU  - Džunuzović, Jasna V.
AU  - Pergal, Marija V.
AU  - Jovanović, Slobodan
AU  - Vodnik, Vesna
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5659
AB  - A series of six polyurethane (PU) networks was synthesized from Boltorn (R) hydroxy-functional hyperbranched polyester (HBP) of the second pseudo generation as a cross-linking agent, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4-methylenediphenyl diisocyanate, by two-step polymerization in solution. Each sample of the prepared PUs had different EO-PDMS-EO content. The chemical structure of the synthesized networks was analyzed by FTIR spectroscopy. The influence of the EO-PDMS-EO content and type of the solvent on the swelling behavior of the PUs in 2-propanol and toluene was investigated. During the swelling measurements, a certain amount of sal fractions was extracted from the PUs by solvents. According to the H-1-NMR results, sal fractions were mainly composed of the soluble hyperbranched PU, formed during the polymerization by partial modification of the end hydroxyl groups of HBP with NCO-terminated prepolymer synthesized in the first step of the reaction. Chains of the so reacted prepolymer can then fold back and form cyclic products by reaction of the free -NCO group from the NCO-terminated prepolymer with free -OH group of HBP. As the EO-PDMS-EO content increases the amount of the sol fractions and swelling degree also increased, indicating that networks with lower EO-PDMS-EO content are more cross-linked and have higher solvent resistance.
T2  - Hemijska industrija
T1  - Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer
EP  - 644
IS  - 6
SP  - 637
VL  - 65
DO  - 10.2298/HEMIND110902071D
ER  - 

@article{
author = "Džunuzović, Jasna V. and Pergal, Marija V. and Jovanović, Slobodan and Vodnik, Vesna",
year = "2011",
abstract = "A series of six polyurethane (PU) networks was synthesized from Boltorn (R) hydroxy-functional hyperbranched polyester (HBP) of the second pseudo generation as a cross-linking agent, alpha,omega-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO) and 4,4-methylenediphenyl diisocyanate, by two-step polymerization in solution. Each sample of the prepared PUs had different EO-PDMS-EO content. The chemical structure of the synthesized networks was analyzed by FTIR spectroscopy. The influence of the EO-PDMS-EO content and type of the solvent on the swelling behavior of the PUs in 2-propanol and toluene was investigated. During the swelling measurements, a certain amount of sal fractions was extracted from the PUs by solvents. According to the H-1-NMR results, sal fractions were mainly composed of the soluble hyperbranched PU, formed during the polymerization by partial modification of the end hydroxyl groups of HBP with NCO-terminated prepolymer synthesized in the first step of the reaction. Chains of the so reacted prepolymer can then fold back and form cyclic products by reaction of the free -NCO group from the NCO-terminated prepolymer with free -OH group of HBP. As the EO-PDMS-EO content increases the amount of the sol fractions and swelling degree also increased, indicating that networks with lower EO-PDMS-EO content are more cross-linked and have higher solvent resistance.",
journal = "Hemijska industrija",
title = "Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer",
pages = "644-637",
number = "6",
volume = "65",
doi = "10.2298/HEMIND110902071D"
}

Džunuzović, J. V., Pergal, M. V., Jovanović, S.,& Vodnik, V.. (2011). Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer. in Hemijska industrija, 65(6), 637-644.
https://doi.org/10.2298/HEMIND110902071D

Džunuzović JV, Pergal MV, Jovanović S, Vodnik V. Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer. in Hemijska industrija. 2011;65(6):637-644.
doi:10.2298/HEMIND110902071D .

Džunuzović, Jasna V., Pergal, Marija V., Jovanović, Slobodan, Vodnik, Vesna, "Synthesis and swelling behavior of polyurethane networks based on hyperbranched polymer" in Hemijska industrija, 65, no. 6 (2011):637-644,
https://doi.org/10.2298/HEMIND110902071D . .

TY  - JOUR
AU  - Pergal, Marija
AU  - Džunuzović, Jasna
AU  - Kicanovic, M.
AU  - Vodnik, Vesna
AU  - Pergal, Miodrag M.
AU  - Jovanovic, S.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5663
AB  - Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4'-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65A degrees C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. This was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - Russian Journal of Physical Chemistry A
T1  - Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester
EP  - 2256
IS  - 13
SP  - 2251
VL  - 85
DO  - 10.1134/S0036024411130243
ER  - 

@article{
author = "Pergal, Marija and Džunuzović, Jasna and Kicanovic, M. and Vodnik, Vesna and Pergal, Miodrag M. and Jovanovic, S.",
year = "2011",
abstract = "Novel polyurethanes (PUs) were synthesized using hydroxy-terminated hyperbranched polyester (BH-20) and 4,4'-methylenediphenyl diisocyanate (MDI) as hard segments and hydroxy-terminated ethylene oxide-poly(dimethylsiloxane)-ethylene oxide triblock copolymer (PDMS-EO) as soft segment, with soft segment content ranging from 30 to 60 wt %. The PUs were synthesized by two-step solution polymerization method. The influence of the soft segment content on the structure, swelling behavior and thermal properties of PUs was investigated. According to the results obtained by swelling measurements, the increase of the hard segment content resulted in the increase of the crosslinking density of synthesized samples. DSC results showed that the glass transition temperatures increase from 36 to 65A degrees C with increasing hard segment content. It was demonstrated using thermogravimetric analysis (TGA) that thermal stability of investigated PUs increases with increase of the soft PDMS-EO content. This was concluded from the temperatures corresponding to the 10 wt % loss, which represents the beginning of thermal degradation of samples.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "Russian Journal of Physical Chemistry A",
title = "Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester",
pages = "2256-2251",
number = "13",
volume = "85",
doi = "10.1134/S0036024411130243"
}

Pergal, M., Džunuzović, J., Kicanovic, M., Vodnik, V., Pergal, M. M.,& Jovanovic, S.. (2011). Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester. in Russian Journal of Physical Chemistry A
Maik Nauka/Interperiodica/Springer, New York., 85(13), 2251-2256.
https://doi.org/10.1134/S0036024411130243

Pergal M, Džunuzović J, Kicanovic M, Vodnik V, Pergal MM, Jovanovic S. Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester. in Russian Journal of Physical Chemistry A. 2011;85(13):2251-2256.
doi:10.1134/S0036024411130243 .

Pergal, Marija, Džunuzović, Jasna, Kicanovic, M., Vodnik, Vesna, Pergal, Miodrag M., Jovanovic, S., "Thermal properties of poly(urethane-ester-siloxane)s based on hyperbranched polyester" in Russian Journal of Physical Chemistry A, 85, no. 13 (2011):2251-2256,
https://doi.org/10.1134/S0036024411130243 . .

TY  - CONF
AU  - Đoković, Vladimir
AU  - Božanić, Dušan K.
AU  - Vodnik, Vesna
AU  - Krsmanović, Radenka
AU  - Trandafilović, Lidija V.
AU  - Dimitrijević-Branković, Suzana
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1862
AB  - We present the results on the structure and the optical properties of noble metal (Ag, Au) and oxide (ZnO) nanoparticles synthesized by various methods in different polysaccharide matrices such as chitosan, glycogen, alginate and starch. The structure of the obtained nanoparticles was studied in detail with microscopic techniques (TEM, SEM), while the XPS spectroscopy was used to investigate the effects at the nanoparticle-biomolecule interfaces. The antimicrobial activity of the nanocomposite films with Ag nanoparticles was tested against the Staphylococcus aureus, Escherichia coli and Candida albicans pathogens. In addition, we will present the results on the structure and optical properties of the tryptophan amino acid functionalized silver nanoparticles dispersed in water soluble polymer matrices.
PB  - Spie-Int Soc Optical Engineering, Bellingham
C3  - Physical Chemistry of Interfaces and Nanomaterials X
T1  - Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers
VL  - 8098
DO  - 10.1117/12.899934
ER  - 

@conference{
author = "Đoković, Vladimir and Božanić, Dušan K. and Vodnik, Vesna and Krsmanović, Radenka and Trandafilović, Lidija V. and Dimitrijević-Branković, Suzana",
year = "2011",
abstract = "We present the results on the structure and the optical properties of noble metal (Ag, Au) and oxide (ZnO) nanoparticles synthesized by various methods in different polysaccharide matrices such as chitosan, glycogen, alginate and starch. The structure of the obtained nanoparticles was studied in detail with microscopic techniques (TEM, SEM), while the XPS spectroscopy was used to investigate the effects at the nanoparticle-biomolecule interfaces. The antimicrobial activity of the nanocomposite films with Ag nanoparticles was tested against the Staphylococcus aureus, Escherichia coli and Candida albicans pathogens. In addition, we will present the results on the structure and optical properties of the tryptophan amino acid functionalized silver nanoparticles dispersed in water soluble polymer matrices.",
publisher = "Spie-Int Soc Optical Engineering, Bellingham",
journal = "Physical Chemistry of Interfaces and Nanomaterials X",
title = "Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers",
volume = "8098",
doi = "10.1117/12.899934"
}

Đoković, V., Božanić, D. K., Vodnik, V., Krsmanović, R., Trandafilović, L. V.,& Dimitrijević-Branković, S.. (2011). Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers. in Physical Chemistry of Interfaces and Nanomaterials X
Spie-Int Soc Optical Engineering, Bellingham., 8098.
https://doi.org/10.1117/12.899934

Đoković V, Božanić DK, Vodnik V, Krsmanović R, Trandafilović LV, Dimitrijević-Branković S. Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers. in Physical Chemistry of Interfaces and Nanomaterials X. 2011;8098.
doi:10.1117/12.899934 .

Đoković, Vladimir, Božanić, Dušan K., Vodnik, Vesna, Krsmanović, Radenka, Trandafilović, Lidija V., Dimitrijević-Branković, Suzana, "Structure and optical properties of noble metal and oxide nanoparticles dispersed in various polysaccharide biopolymers" in Physical Chemistry of Interfaces and Nanomaterials X, 8098 (2011),
https://doi.org/10.1117/12.899934 . .

TY  - JOUR
AU  - Pandis, Ch.
AU  - Logakis, E.
AU  - Kyritsis, A.
AU  - Pissis, P.
AU  - Vodnik, Vesna
AU  - Džunuzović, Enis
AU  - Nedeljković, Jovan
AU  - Đoković, Vladimir
AU  - Rodriguez Hernandez, J. C.
AU  - Gomez Ribelles, J. L.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1865
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.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - European Polymer Journal
T1  - Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites
EP  - 1525
IS  - 8
SP  - 1514
VL  - 47
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 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.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "European Polymer Journal",
title = "Glass transition and polymer dynamics in silver/poly(methyl methacrylate) nanocomposites",
pages = "1525-1514",
number = "8",
volume = "47",
doi = "10.1016/j.eurpolymj.2011.06.001"
}

Pandis, Ch., Logakis, E., Kyritsis, A., Pissis, P., Vodnik, V., Džunuzović, E., 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
Pergamon-Elsevier Science Ltd, Oxford., 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 E, 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, 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 . .

TY  - JOUR
AU  - Ilić, Vesna M.
AU  - Šaponjić, Zoran
AU  - Vodnik, Vesna
AU  - Lazović, Saša
AU  - Dimitrijević, Suzana
AU  - Jovančić, Petar
AU  - Nedeljković, Jovan
AU  - Radetić, Maja
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1655
AB  - The potential application of low-temperature radio frequency (RF) plasma for fiber surface activation in order to enhance the binding efficiency of colloidal silver nanoparticles onto the polyester fabrics and improve the stability of antibacterial effects was studied. Antibacterial activity and laundering durability were tested against gram-negative bacterium Escherichia coli and gram-positive bacterium Staphylococcus aureus. Plasma treatment positively affected the loading of silver nanoparticles as well as antibacterial activity and laundering durability of these textile nanocomposite materials. In spite of good laundering durability after five washing cycles, it was found that silver leached from the fabric into the bath during washing. Released silver from the washing effluent was efficiently removed by recycled wool-based nonwoven sorbent modified with hydrogen peroxide and biopolymer alginate.
PB  - Amer Chemical Soc, Washington
T2  - Industrial & Engineering Chemistry Research
T1  - Bactericidal Efficiency of Silver Nanoparticles Deposited onto Radio Frequency Plasma Pretreated Polyester Fabrics
EP  - 7293
IS  - 16
SP  - 7287
VL  - 49
DO  - 10.1021/ie1001313
ER  - 

@article{
author = "Ilić, Vesna M. and Šaponjić, Zoran and Vodnik, Vesna and Lazović, Saša and Dimitrijević, Suzana and Jovančić, Petar and Nedeljković, Jovan and Radetić, Maja",
year = "2010",
abstract = "The potential application of low-temperature radio frequency (RF) plasma for fiber surface activation in order to enhance the binding efficiency of colloidal silver nanoparticles onto the polyester fabrics and improve the stability of antibacterial effects was studied. Antibacterial activity and laundering durability were tested against gram-negative bacterium Escherichia coli and gram-positive bacterium Staphylococcus aureus. Plasma treatment positively affected the loading of silver nanoparticles as well as antibacterial activity and laundering durability of these textile nanocomposite materials. In spite of good laundering durability after five washing cycles, it was found that silver leached from the fabric into the bath during washing. Released silver from the washing effluent was efficiently removed by recycled wool-based nonwoven sorbent modified with hydrogen peroxide and biopolymer alginate.",
publisher = "Amer Chemical Soc, Washington",
journal = "Industrial & Engineering Chemistry Research",
title = "Bactericidal Efficiency of Silver Nanoparticles Deposited onto Radio Frequency Plasma Pretreated Polyester Fabrics",
pages = "7293-7287",
number = "16",
volume = "49",
doi = "10.1021/ie1001313"
}

Ilić, V. M., Šaponjić, Z., Vodnik, V., Lazović, S., Dimitrijević, S., Jovančić, P., Nedeljković, J.,& Radetić, M.. (2010). Bactericidal Efficiency of Silver Nanoparticles Deposited onto Radio Frequency Plasma Pretreated Polyester Fabrics. in Industrial & Engineering Chemistry Research
Amer Chemical Soc, Washington., 49(16), 7287-7293.
https://doi.org/10.1021/ie1001313

Ilić VM, Šaponjić Z, Vodnik V, Lazović S, Dimitrijević S, Jovančić P, Nedeljković J, Radetić M. Bactericidal Efficiency of Silver Nanoparticles Deposited onto Radio Frequency Plasma Pretreated Polyester Fabrics. in Industrial & Engineering Chemistry Research. 2010;49(16):7287-7293.
doi:10.1021/ie1001313 .

Ilić, Vesna M., Šaponjić, Zoran, Vodnik, Vesna, Lazović, Saša, Dimitrijević, Suzana, Jovančić, Petar, Nedeljković, Jovan, Radetić, Maja, "Bactericidal Efficiency of Silver Nanoparticles Deposited onto Radio Frequency Plasma Pretreated Polyester Fabrics" in Industrial & Engineering Chemistry Research, 49, no. 16 (2010):7287-7293,
https://doi.org/10.1021/ie1001313 . .