Basic Science Research Program of the Ministry of Education, Science and Technology of Korea [2018R1A2B5A02023190]

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Basic Science Research Program of the Ministry of Education, Science and Technology of Korea [2018R1A2B5A02023190]

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Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels

Nešović, Katarina; Janković, Ana; Perić-Grujić, Aleksandra A.; Vukašinović-Sekulić, Maja; Radetić, Tamara; Živković, Ljiljana; Park, Soo Jin; Rhee, Kyong Yop; Mišković-Stanković, Vesna

(2019)

TY  - JOUR
AU  - Nešović, Katarina
AU  - Janković, Ana
AU  - Perić-Grujić, Aleksandra A.
AU  - Vukašinović-Sekulić, Maja
AU  - Radetić, Tamara
AU  - Živković, Ljiljana
AU  - Park, Soo Jin
AU  - Rhee, Kyong Yop
AU  - Mišković-Stanković, Vesna
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8170
AB  - Silver nanoparticles (AgNPs) were synthesized by in situ electrochemical reduction of Ag+ ions in poly(vinyl alcohol)/chitosan/graphene (PVA/CHI/Gr) hydrogel matrices with different concentrations of chitosan. The physicochemical properties of nanocomposite hydrogels were investigated by UV–vis spectroscopy (UV–vis), dynamic light scattering (DLS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM) and Fourier-transform infrared spectroscopy (FT-IR), thermal characteristics were determined by differential scanning calorimetry (DSC) and mechanical properties were measured by tensile test. The swelling studies were carried out in phosphate buffer to simulate natural physiological environment and data were fitted by several kinetic models to determine the diffusion mechanism and diffusion coefficients of the swelling medium through the hydrogel matrices. It was shown that the presence of silver nanoparticles increased the uptake capability and equilibrium swelling degree of the composite hydrogels. The antibacterial activity was confirmed against Escherichia coli and Staphylococcus aureus, while the hydrogels without AgNPs exhibited antibacterial properties due to the presence of chitosan. With the addition of AgNPs, the samples showed stronger activity and fast reduction in the number of colonies, confirming the synergistic effect of chitosan and AgNPs on the antibacterial activity. © 2019
T2  - Journal of Industrial and Engineering Chemistry
T1  - Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels
VL  - 77
SP  - 83
EP  - 96
DO  - 10.1016/j.jiec.2019.04.022
ER  - 
@article{
author = "Nešović, Katarina and Janković, Ana and Perić-Grujić, Aleksandra A. and Vukašinović-Sekulić, Maja and Radetić, Tamara and Živković, Ljiljana and Park, Soo Jin and Rhee, Kyong Yop and Mišković-Stanković, Vesna",
year = "2019",
abstract = "Silver nanoparticles (AgNPs) were synthesized by in situ electrochemical reduction of Ag+ ions in poly(vinyl alcohol)/chitosan/graphene (PVA/CHI/Gr) hydrogel matrices with different concentrations of chitosan. The physicochemical properties of nanocomposite hydrogels were investigated by UV–vis spectroscopy (UV–vis), dynamic light scattering (DLS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM) and Fourier-transform infrared spectroscopy (FT-IR), thermal characteristics were determined by differential scanning calorimetry (DSC) and mechanical properties were measured by tensile test. The swelling studies were carried out in phosphate buffer to simulate natural physiological environment and data were fitted by several kinetic models to determine the diffusion mechanism and diffusion coefficients of the swelling medium through the hydrogel matrices. It was shown that the presence of silver nanoparticles increased the uptake capability and equilibrium swelling degree of the composite hydrogels. The antibacterial activity was confirmed against Escherichia coli and Staphylococcus aureus, while the hydrogels without AgNPs exhibited antibacterial properties due to the presence of chitosan. With the addition of AgNPs, the samples showed stronger activity and fast reduction in the number of colonies, confirming the synergistic effect of chitosan and AgNPs on the antibacterial activity. © 2019",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels",
volume = "77",
pages = "83-96",
doi = "10.1016/j.jiec.2019.04.022"
}
Nešović, K., Janković, A., Perić-Grujić, A. A., Vukašinović-Sekulić, M., Radetić, T., Živković, L., Park, S. J., Rhee, K. Y.,& Mišković-Stanković, V.. (2019). Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels. in Journal of Industrial and Engineering Chemistry, 77, 83-96.
https://doi.org/10.1016/j.jiec.2019.04.022
Nešović K, Janković A, Perić-Grujić AA, Vukašinović-Sekulić M, Radetić T, Živković L, Park SJ, Rhee KY, Mišković-Stanković V. Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels. in Journal of Industrial and Engineering Chemistry. 2019;77:83-96.
doi:10.1016/j.jiec.2019.04.022 .
Nešović, Katarina, Janković, Ana, Perić-Grujić, Aleksandra A., Vukašinović-Sekulić, Maja, Radetić, Tamara, Živković, Ljiljana, Park, Soo Jin, Rhee, Kyong Yop, Mišković-Stanković, Vesna, "Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels" in Journal of Industrial and Engineering Chemistry, 77 (2019):83-96,
https://doi.org/10.1016/j.jiec.2019.04.022 . .
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Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels

Nešović, Katarina; Janković, Ana; Perić-Grujić, Aleksandra A.; Vukašinović-Sekulić, Maja; Radetić, Tamara; Živković, Ljiljana; Park, Soo Jin; Rhee, Kyong Yop; Mišković-Stanković, Vesna

(2019)

TY  - JOUR
AU  - Nešović, Katarina
AU  - Janković, Ana
AU  - Perić-Grujić, Aleksandra A.
AU  - Vukašinović-Sekulić, Maja
AU  - Radetić, Tamara
AU  - Živković, Ljiljana
AU  - Park, Soo Jin
AU  - Rhee, Kyong Yop
AU  - Mišković-Stanković, Vesna
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8189
AB  - Silver nanoparticles (AgNPs) were synthesized by in situ electrochemical reduction of Ag+ ions in poly(vinyl alcohol)/chitosan/graphene (PVA/CHI/Gr) hydrogel matrices with different concentrations of chitosan. The physicochemical properties of nanocomposite hydrogels were investigated by UV–vis spectroscopy (UV–vis), dynamic light scattering (DLS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM) and Fourier-transform infrared spectroscopy (FT-IR), thermal characteristics were determined by differential scanning calorimetry (DSC) and mechanical properties were measured by tensile test. The swelling studies were carried out in phosphate buffer to simulate natural physiological environment and data were fitted by several kinetic models to determine the diffusion mechanism and diffusion coefficients of the swelling medium through the hydrogel matrices. It was shown that the presence of silver nanoparticles increased the uptake capability and equilibrium swelling degree of the composite hydrogels. The antibacterial activity was confirmed against Escherichia coli and Staphylococcus aureus, while the hydrogels without AgNPs exhibited antibacterial properties due to the presence of chitosan. With the addition of AgNPs, the samples showed stronger activity and fast reduction in the number of colonies, confirming the synergistic effect of chitosan and AgNPs on the antibacterial activity. © 2019
T2  - Journal of Industrial and Engineering Chemistry
T1  - Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels
VL  - 77
SP  - 83
EP  - 96
DO  - 10.1016/j.jiec.2019.04.022
ER  - 
@article{
author = "Nešović, Katarina and Janković, Ana and Perić-Grujić, Aleksandra A. and Vukašinović-Sekulić, Maja and Radetić, Tamara and Živković, Ljiljana and Park, Soo Jin and Rhee, Kyong Yop and Mišković-Stanković, Vesna",
year = "2019",
abstract = "Silver nanoparticles (AgNPs) were synthesized by in situ electrochemical reduction of Ag+ ions in poly(vinyl alcohol)/chitosan/graphene (PVA/CHI/Gr) hydrogel matrices with different concentrations of chitosan. The physicochemical properties of nanocomposite hydrogels were investigated by UV–vis spectroscopy (UV–vis), dynamic light scattering (DLS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM) and Fourier-transform infrared spectroscopy (FT-IR), thermal characteristics were determined by differential scanning calorimetry (DSC) and mechanical properties were measured by tensile test. The swelling studies were carried out in phosphate buffer to simulate natural physiological environment and data were fitted by several kinetic models to determine the diffusion mechanism and diffusion coefficients of the swelling medium through the hydrogel matrices. It was shown that the presence of silver nanoparticles increased the uptake capability and equilibrium swelling degree of the composite hydrogels. The antibacterial activity was confirmed against Escherichia coli and Staphylococcus aureus, while the hydrogels without AgNPs exhibited antibacterial properties due to the presence of chitosan. With the addition of AgNPs, the samples showed stronger activity and fast reduction in the number of colonies, confirming the synergistic effect of chitosan and AgNPs on the antibacterial activity. © 2019",
journal = "Journal of Industrial and Engineering Chemistry",
title = "Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels",
volume = "77",
pages = "83-96",
doi = "10.1016/j.jiec.2019.04.022"
}
Nešović, K., Janković, A., Perić-Grujić, A. A., Vukašinović-Sekulić, M., Radetić, T., Živković, L., Park, S. J., Rhee, K. Y.,& Mišković-Stanković, V.. (2019). Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels. in Journal of Industrial and Engineering Chemistry, 77, 83-96.
https://doi.org/10.1016/j.jiec.2019.04.022
Nešović K, Janković A, Perić-Grujić AA, Vukašinović-Sekulić M, Radetić T, Živković L, Park SJ, Rhee KY, Mišković-Stanković V. Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels. in Journal of Industrial and Engineering Chemistry. 2019;77:83-96.
doi:10.1016/j.jiec.2019.04.022 .
Nešović, Katarina, Janković, Ana, Perić-Grujić, Aleksandra A., Vukašinović-Sekulić, Maja, Radetić, Tamara, Živković, Ljiljana, Park, Soo Jin, Rhee, Kyong Yop, Mišković-Stanković, Vesna, "Kinetic models of swelling and thermal stability of silver/poly(vinyl alcohol)/chitosan/graphene hydrogels" in Journal of Industrial and Engineering Chemistry, 77 (2019):83-96,
https://doi.org/10.1016/j.jiec.2019.04.022 . .
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The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy

Živković, Ljiljana; Jegdić, Bore V.; Andrić, Velibor; Rhee, Kyong Yop; Bajat, Jelena B.; Mišković-Stanković, Vesna

(2019)

TY  - JOUR
AU  - Živković, Ljiljana
AU  - Jegdić, Bore V.
AU  - Andrić, Velibor
AU  - Rhee, Kyong Yop
AU  - Bajat, Jelena B.
AU  - Mišković-Stanković, Vesna
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8422
AB  - In this work an attempt was made to produce epoxy coating doped with ceria (CeO2) and/or zirconia (ZrO2) nanoparticles, in single step electrophoretric deposition process. Deposition was carried out on AA6060 cataforetically from epoxy resin suspension containing synthesized stable aqueous colloidal dispersions (sols) of CeO2 and ZrO2. The influence of ceria and zirconia nanoparticles on the physicochemical characteristics of epoxy coatings was evaluated by energy dispersive X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis and adhesion measurements, while their corrosion stability during immersion in 0.5 M NaCl solution was monitored by electrochemical impedance spectroscopy. All ceria and/or zirconia containing coatings showed better corrosion stability and adhesion than pure epoxy coating, while between doped epoxy coatings one with CeO2/ZrO2 exhhibited the greatest values of charge-transfer resistance due to synergetic effect of both types of added nanoparticles. © 2019 Elsevier B.V.
T2  - Progress in Organic Coatings
T1  - The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy
VL  - 136
SP  - 105219
DO  - 10.1016/j.porgcoat.2019.105219
ER  - 
@article{
author = "Živković, Ljiljana and Jegdić, Bore V. and Andrić, Velibor and Rhee, Kyong Yop and Bajat, Jelena B. and Mišković-Stanković, Vesna",
year = "2019",
abstract = "In this work an attempt was made to produce epoxy coating doped with ceria (CeO2) and/or zirconia (ZrO2) nanoparticles, in single step electrophoretric deposition process. Deposition was carried out on AA6060 cataforetically from epoxy resin suspension containing synthesized stable aqueous colloidal dispersions (sols) of CeO2 and ZrO2. The influence of ceria and zirconia nanoparticles on the physicochemical characteristics of epoxy coatings was evaluated by energy dispersive X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis and adhesion measurements, while their corrosion stability during immersion in 0.5 M NaCl solution was monitored by electrochemical impedance spectroscopy. All ceria and/or zirconia containing coatings showed better corrosion stability and adhesion than pure epoxy coating, while between doped epoxy coatings one with CeO2/ZrO2 exhhibited the greatest values of charge-transfer resistance due to synergetic effect of both types of added nanoparticles. © 2019 Elsevier B.V.",
journal = "Progress in Organic Coatings",
title = "The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy",
volume = "136",
pages = "105219",
doi = "10.1016/j.porgcoat.2019.105219"
}
Živković, L., Jegdić, B. V., Andrić, V., Rhee, K. Y., Bajat, J. B.,& Mišković-Stanković, V.. (2019). The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy. in Progress in Organic Coatings, 136, 105219.
https://doi.org/10.1016/j.porgcoat.2019.105219
Živković L, Jegdić BV, Andrić V, Rhee KY, Bajat JB, Mišković-Stanković V. The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy. in Progress in Organic Coatings. 2019;136:105219.
doi:10.1016/j.porgcoat.2019.105219 .
Živković, Ljiljana, Jegdić, Bore V., Andrić, Velibor, Rhee, Kyong Yop, Bajat, Jelena B., Mišković-Stanković, Vesna, "The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy" in Progress in Organic Coatings, 136 (2019):105219,
https://doi.org/10.1016/j.porgcoat.2019.105219 . .
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