TY  - JOUR
AU  - Đonlagić, Jasna
AU  - Lancuski, Anica
AU  - Nikolić, Marija
AU  - Rogan, Jelena
AU  - Ostojić, Sanja
AU  - Petrović, Zoran
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3661
AB  - Two series of semiinterpenetrating networks (SIPN) based on linear hydrophilic poly(vinyl alcohol) (PVA) and thermoresponsive poly(N-isopropylacrylamide) (PNIPA), physically crosslinked with inorganic clay, are presented. The hydrogels with different crosslinking densities were prepared by varying the content of clay from 1 to 6 wt % and contained linear interpenetrant, PVA in the range of 0.5-1.5 wt %. The effect of clay content on swelling/deswelling behavior and phase transition in PNIPA gels, as well as the feasibility of reinforcing the gels with high molecular weight PVA, were analyzed. The thermal response of hydrogels, followed by DSC, confirmed that the insertion of hydrophilic PVA did not have a significant effect on the onset of the volume phase transition temperature, while the response was faster. The equilibrium degree of swelling of SIPNs and PNIPA hydrogels was in the range of 979 and decreased with increasing content of clay. The internal morphology and surface wettability of the hydrogels were investigated by scanning electron microscope analysis and contact angle measurements, respectively. The network structural parameters of the PNIPA and SIPN nanocomposites hydrogels, such as the average molecular weight between crosslinks, M-c, and effective crosslinking density, Ne, were determined by dynamic mechanical analysis.
PB  - Wiley-Blackwell, Hoboken
T2  - Journal of Applied Polymer Science
T1  - Hydrogels reinforced with nanoclays with improved response rate
IS  - 9
VL  - 134
DO  - 10.1002/app.44535
ER  - 

@article{
author = "Đonlagić, Jasna and Lancuski, Anica and Nikolić, Marija and Rogan, Jelena and Ostojić, Sanja and Petrović, Zoran",
year = "2017",
abstract = "Two series of semiinterpenetrating networks (SIPN) based on linear hydrophilic poly(vinyl alcohol) (PVA) and thermoresponsive poly(N-isopropylacrylamide) (PNIPA), physically crosslinked with inorganic clay, are presented. The hydrogels with different crosslinking densities were prepared by varying the content of clay from 1 to 6 wt % and contained linear interpenetrant, PVA in the range of 0.5-1.5 wt %. The effect of clay content on swelling/deswelling behavior and phase transition in PNIPA gels, as well as the feasibility of reinforcing the gels with high molecular weight PVA, were analyzed. The thermal response of hydrogels, followed by DSC, confirmed that the insertion of hydrophilic PVA did not have a significant effect on the onset of the volume phase transition temperature, while the response was faster. The equilibrium degree of swelling of SIPNs and PNIPA hydrogels was in the range of 979 and decreased with increasing content of clay. The internal morphology and surface wettability of the hydrogels were investigated by scanning electron microscope analysis and contact angle measurements, respectively. The network structural parameters of the PNIPA and SIPN nanocomposites hydrogels, such as the average molecular weight between crosslinks, M-c, and effective crosslinking density, Ne, were determined by dynamic mechanical analysis.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Journal of Applied Polymer Science",
title = "Hydrogels reinforced with nanoclays with improved response rate",
number = "9",
volume = "134",
doi = "10.1002/app.44535"
}

Đonlagić, J., Lancuski, A., Nikolić, M., Rogan, J., Ostojić, S.,& Petrović, Z.. (2017). Hydrogels reinforced with nanoclays with improved response rate. in Journal of Applied Polymer Science
Wiley-Blackwell, Hoboken., 134(9).
https://doi.org/10.1002/app.44535

Đonlagić J, Lancuski A, Nikolić M, Rogan J, Ostojić S, Petrović Z. Hydrogels reinforced with nanoclays with improved response rate. in Journal of Applied Polymer Science. 2017;134(9).
doi:10.1002/app.44535 .

Đonlagić, Jasna, Lancuski, Anica, Nikolić, Marija, Rogan, Jelena, Ostojić, Sanja, Petrović, Zoran, "Hydrogels reinforced with nanoclays with improved response rate" in Journal of Applied Polymer Science, 134, no. 9 (2017),
https://doi.org/10.1002/app.44535 . .

TY  - JOUR
AU  - Žugić, Dragana
AU  - Spasojević, Pavle
AU  - Petrović, Zoran
AU  - Đonlagić, Jasna
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1513
AB  - Three series of novel semi-interpenetrating polymer networks, based on crosslinked poly(N-isopropylacrylamide), PNIPA, and different amounts of the linear poly(N-vinylpyrrolidone), PVP, were synthesized to improve the mechanical properties and thermal response of PNIPA gels. The effect of the incorporation of the linear PVP into the temperature responsive networks on the temperature-induced transition, swelling/deswelling behavior, and mechanical properties Was Studied. Polymer networks with four different crosslinking densities were prepared with varying molar ratios (25/1 to 100/1) of the monomer (N-isopropylacrylamide) to the crosslinker (N,N'-methylenebisacrylamide). The hydrogels were characterized by determination of the equilibrium degree of swelling, the dynamic shear modulus and the effective crosslinking density, as well as tensile strength and elongation at break. Furthermore, the deswelling kinetics of the hydrogels was studied by measuring their water retention capacity. The inclusion of the linear hydrophilic PVP in the PNIPA networks increased the equilibrium degree of swelling. The tensile strength of the semi-interpenetrating networks (SIPNs) reinforced with linear PVP was higher than that of the PNIPA networks. The elongation at break of these SIPNs varied between 22%, and 55%, which are 22 - 41% larger than those for pure PNIPA networks.
PB  - Wiley, Hoboken
T2  - Journal of Applied Polymer Science
T1  - Semi-Interpenetrating Networks Based on Poly(N-isopropyl acrylamide) and Poly(N-vinylpyrrolidone)
EP  - 1603
IS  - 3
SP  - 1593
VL  - 113
DO  - 10.1002/app.30075
ER  - 

@article{
author = "Žugić, Dragana and Spasojević, Pavle and Petrović, Zoran and Đonlagić, Jasna",
year = "2009",
abstract = "Three series of novel semi-interpenetrating polymer networks, based on crosslinked poly(N-isopropylacrylamide), PNIPA, and different amounts of the linear poly(N-vinylpyrrolidone), PVP, were synthesized to improve the mechanical properties and thermal response of PNIPA gels. The effect of the incorporation of the linear PVP into the temperature responsive networks on the temperature-induced transition, swelling/deswelling behavior, and mechanical properties Was Studied. Polymer networks with four different crosslinking densities were prepared with varying molar ratios (25/1 to 100/1) of the monomer (N-isopropylacrylamide) to the crosslinker (N,N'-methylenebisacrylamide). The hydrogels were characterized by determination of the equilibrium degree of swelling, the dynamic shear modulus and the effective crosslinking density, as well as tensile strength and elongation at break. Furthermore, the deswelling kinetics of the hydrogels was studied by measuring their water retention capacity. The inclusion of the linear hydrophilic PVP in the PNIPA networks increased the equilibrium degree of swelling. The tensile strength of the semi-interpenetrating networks (SIPNs) reinforced with linear PVP was higher than that of the PNIPA networks. The elongation at break of these SIPNs varied between 22%, and 55%, which are 22 - 41% larger than those for pure PNIPA networks.",
publisher = "Wiley, Hoboken",
journal = "Journal of Applied Polymer Science",
title = "Semi-Interpenetrating Networks Based on Poly(N-isopropyl acrylamide) and Poly(N-vinylpyrrolidone)",
pages = "1603-1593",
number = "3",
volume = "113",
doi = "10.1002/app.30075"
}

Žugić, D., Spasojević, P., Petrović, Z.,& Đonlagić, J.. (2009). Semi-Interpenetrating Networks Based on Poly(N-isopropyl acrylamide) and Poly(N-vinylpyrrolidone). in Journal of Applied Polymer Science
Wiley, Hoboken., 113(3), 1593-1603.
https://doi.org/10.1002/app.30075

Žugić D, Spasojević P, Petrović Z, Đonlagić J. Semi-Interpenetrating Networks Based on Poly(N-isopropyl acrylamide) and Poly(N-vinylpyrrolidone). in Journal of Applied Polymer Science. 2009;113(3):1593-1603.
doi:10.1002/app.30075 .

Žugić, Dragana, Spasojević, Pavle, Petrović, Zoran, Đonlagić, Jasna, "Semi-Interpenetrating Networks Based on Poly(N-isopropyl acrylamide) and Poly(N-vinylpyrrolidone)" in Journal of Applied Polymer Science, 113, no. 3 (2009):1593-1603,
https://doi.org/10.1002/app.30075 . .