TY  - JOUR
AU  - Pergal, Marija V.
AU  - Dojcinović, Biljana P.
AU  - Nikodinović-Runić, Jasmina
AU  - Drazić, Goran
AU  - Logar, Nataša Zabukovec
AU  - Ostojić, Sanja
AU  - Antić, Bratislav
PY  - 2022
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1556
AB  - In situ polymerization was used to produce novel AgFeO2"PEG/polyurethane network nanocomposites (NP-PUs) with 30-60 wt% of soft poly(dimethylsiloxane) segments in polyurethane (PU), containing 1 wt% of PEG-coated AgFeO2 nanoparticles, AgFeO2"PEG. Physicochemical properties and in vitro biological activity of the NP-PUs were systematically evaluated in terms of AgFeO2"PEG (NP) addition and soft segment content. High-angle annular dark-field transmission electron microscopy showed that the nanoparticles were generally uniformly distributed in the PU matrix. Increased soft segment content caused significantly increased intensity of the broad, amorphous X-ray diffraction peaks of crystalline AgFeO2, probably because the chemical composition of PU affected the distribution of nanoparticles. The Young modulus, hardness, and plasticity of the NP-PUs were higher than for pure PU and increased with decreasing soft segment content. Decreased soft segment content induced higher microphase separation, increased hydrophilicity and swelling ability, but decreased cross-linking density. Additionally, NP-PUs had higher glass transition temperatures, improved thermal stability, and enhanced nanomechanical performance over pure PU. The NP-PUs demonstrated good selective inhibition of Candida albicans and Candida parapsilosis (30-55%) and no pronounced cytotoxicity to MRC5 human lung fibroblasts. Among the investigated AgFeO2"PEG/PUs, the best antifungal activity was shown by composites with 30 and 40 wt% soft segments. Consequently, the novel AgFeO2"PEG/polyurethane network nanocomposites could be further optimized to be used as biocompatible surfaces that also prevent formation of fungal biofilms. [GRAPHICS] .
PB  - New York : Springer
T2  - Journal of Materials Science
T1  - Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites
EP  - 7848
IS  - 16
SP  - 7827
VL  - 57
DO  - 10.1007/s10853-022-07178-9
ER  - 

@article{
author = "Pergal, Marija V. and Dojcinović, Biljana P. and Nikodinović-Runić, Jasmina and Drazić, Goran and Logar, Nataša Zabukovec and Ostojić, Sanja and Antić, Bratislav",
year = "2022",
abstract = "In situ polymerization was used to produce novel AgFeO2"PEG/polyurethane network nanocomposites (NP-PUs) with 30-60 wt% of soft poly(dimethylsiloxane) segments in polyurethane (PU), containing 1 wt% of PEG-coated AgFeO2 nanoparticles, AgFeO2"PEG. Physicochemical properties and in vitro biological activity of the NP-PUs were systematically evaluated in terms of AgFeO2"PEG (NP) addition and soft segment content. High-angle annular dark-field transmission electron microscopy showed that the nanoparticles were generally uniformly distributed in the PU matrix. Increased soft segment content caused significantly increased intensity of the broad, amorphous X-ray diffraction peaks of crystalline AgFeO2, probably because the chemical composition of PU affected the distribution of nanoparticles. The Young modulus, hardness, and plasticity of the NP-PUs were higher than for pure PU and increased with decreasing soft segment content. Decreased soft segment content induced higher microphase separation, increased hydrophilicity and swelling ability, but decreased cross-linking density. Additionally, NP-PUs had higher glass transition temperatures, improved thermal stability, and enhanced nanomechanical performance over pure PU. The NP-PUs demonstrated good selective inhibition of Candida albicans and Candida parapsilosis (30-55%) and no pronounced cytotoxicity to MRC5 human lung fibroblasts. Among the investigated AgFeO2"PEG/PUs, the best antifungal activity was shown by composites with 30 and 40 wt% soft segments. Consequently, the novel AgFeO2"PEG/polyurethane network nanocomposites could be further optimized to be used as biocompatible surfaces that also prevent formation of fungal biofilms. [GRAPHICS] .",
publisher = "New York : Springer",
journal = "Journal of Materials Science",
title = "Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites",
pages = "7848-7827",
number = "16",
volume = "57",
doi = "10.1007/s10853-022-07178-9"
}

Pergal, M. V., Dojcinović, B. P., Nikodinović-Runić, J., Drazić, G., Logar, N. Z., Ostojić, S.,& Antić, B.. (2022). Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites. in Journal of Materials Science
New York : Springer., 57(16), 7827-7848.
https://doi.org/10.1007/s10853-022-07178-9

Pergal MV, Dojcinović BP, Nikodinović-Runić J, Drazić G, Logar NZ, Ostojić S, Antić B. Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites. in Journal of Materials Science. 2022;57(16):7827-7848.
doi:10.1007/s10853-022-07178-9 .

Pergal, Marija V., Dojcinović, Biljana P., Nikodinović-Runić, Jasmina, Drazić, Goran, Logar, Nataša Zabukovec, Ostojić, Sanja, Antić, Bratislav, "Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites" in Journal of Materials Science, 57, no. 16 (2022):7827-7848,
https://doi.org/10.1007/s10853-022-07178-9 . .

TY  - JOUR
AU  - Jaksić, Jovana
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Vujosević, Zorana Tokic
AU  - Milovanović, Jelena
AU  - Karkalić, Radovan
AU  - O'Connor, Kevin
AU  - Kenny, Shane T.
AU  - Casey, William
AU  - Nikodinović-Runić, Jasmina
AU  - Maslak, Veselin
PY  - 2020
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1399
AB  - In the present work, we describe the chemical synthesis of 3-HFAs as prominent derivatives of fatty acids and assess if they could be applied as phase change materials (PCM). In addition, 3-HFAs were obtained by depolymerization of a bacterial biopolymeric material, polyhydroxyalkanoate. Thermal properties of 3-hydoxyoctanoic, decanoic, and dodecanoic acids are reported for the first time. These materials showed the potential to be applied as PCM in temperature range from 33 degrees C to 66 degrees C. In order to expand the temperature range for application of 3-HFAs as PCM, eutectic mass ratios of three kinds of binary mixtures of 3-HFAs were calculated, and their properties were predicted using the Schroder-van Laar equation. Thermal properties of these mixtures were validated by differential scanning calorimetry (DSC) analysis. These results showed that eutectics considerably expanded the scope of applications of 3-HFAs as PCMs. 3-HFAs originating from biotechnologically obtained polyhydroxyalkanoates also showed potential to be applied in development of PCMs.
PB  - Hoboken : Wiley
T2  - International Journal of Energy Research
T1  - Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials
EP  - 1302
IS  - 2
SP  - 1294
VL  - 44
DO  - 10.1002/er.4934
ER  - 

@article{
author = "Jaksić, Jovana and Ostojić, Sanja and Micić, Darko and Vujosević, Zorana Tokic and Milovanović, Jelena and Karkalić, Radovan and O'Connor, Kevin and Kenny, Shane T. and Casey, William and Nikodinović-Runić, Jasmina and Maslak, Veselin",
year = "2020",
abstract = "In the present work, we describe the chemical synthesis of 3-HFAs as prominent derivatives of fatty acids and assess if they could be applied as phase change materials (PCM). In addition, 3-HFAs were obtained by depolymerization of a bacterial biopolymeric material, polyhydroxyalkanoate. Thermal properties of 3-hydoxyoctanoic, decanoic, and dodecanoic acids are reported for the first time. These materials showed the potential to be applied as PCM in temperature range from 33 degrees C to 66 degrees C. In order to expand the temperature range for application of 3-HFAs as PCM, eutectic mass ratios of three kinds of binary mixtures of 3-HFAs were calculated, and their properties were predicted using the Schroder-van Laar equation. Thermal properties of these mixtures were validated by differential scanning calorimetry (DSC) analysis. These results showed that eutectics considerably expanded the scope of applications of 3-HFAs as PCMs. 3-HFAs originating from biotechnologically obtained polyhydroxyalkanoates also showed potential to be applied in development of PCMs.",
publisher = "Hoboken : Wiley",
journal = "International Journal of Energy Research",
title = "Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials",
pages = "1302-1294",
number = "2",
volume = "44",
doi = "10.1002/er.4934"
}

Jaksić, J., Ostojić, S., Micić, D., Vujosević, Z. T., Milovanović, J., Karkalić, R., O'Connor, K., Kenny, S. T., Casey, W., Nikodinović-Runić, J.,& Maslak, V.. (2020). Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials. in International Journal of Energy Research
Hoboken : Wiley., 44(2), 1294-1302.
https://doi.org/10.1002/er.4934

Jaksić J, Ostojić S, Micić D, Vujosević ZT, Milovanović J, Karkalić R, O'Connor K, Kenny ST, Casey W, Nikodinović-Runić J, Maslak V. Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials. in International Journal of Energy Research. 2020;44(2):1294-1302.
doi:10.1002/er.4934 .

Jaksić, Jovana, Ostojić, Sanja, Micić, Darko, Vujosević, Zorana Tokic, Milovanović, Jelena, Karkalić, Radovan, O'Connor, Kevin, Kenny, Shane T., Casey, William, Nikodinović-Runić, Jasmina, Maslak, Veselin, "Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials" in International Journal of Energy Research, 44, no. 2 (2020):1294-1302,
https://doi.org/10.1002/er.4934 . .