In this study, the swelling behaviour of copolymer hydrogels of N-isopropylacrylamide (NIPAM) and itaconic acid (IA) in response to temperature and pH value of the external media was studied. The equilibrium degree of swelling for PNIPAM and PNIPAM/IA copolymers was greater at 25 degrees C than at 37 degrees C. The degree of swelling was low at low pH values. As the degree of ionization increased above the nominal pK(a) values of IA, the increased hydrophilicity resulted in larger degrees of swelling. At 37 degrees C, the PNIPAM hydrogel and some copolymers show anomalous swelling behaviour, i.e. the overshooting effect, in buffered solutions of certain pH values. A swelling-deswelling study showed that the deswelling process of the hydrogels was faster then the swelling process. According to dynamic swelling studies, the diffusion exponent and the diffusion coefficient both increase with increasing content of IA.
TY - JOUR
AU - Kalagasidis-Krušić, Melina
AU - Filipović, J
PY - 2006
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/947
AB - In this study, the swelling behaviour of copolymer hydrogels of N-isopropylacrylamide (NIPAM) and itaconic acid (IA) in response to temperature and pH value of the external media was studied. The equilibrium degree of swelling for PNIPAM and PNIPAM/IA copolymers was greater at 25 degrees C than at 37 degrees C. The degree of swelling was low at low pH values. As the degree of ionization increased above the nominal pK(a) values of IA, the increased hydrophilicity resulted in larger degrees of swelling. At 37 degrees C, the PNIPAM hydrogel and some copolymers show anomalous swelling behaviour, i.e. the overshooting effect, in buffered solutions of certain pH values. A swelling-deswelling study showed that the deswelling process of the hydrogels was faster then the swelling process. According to dynamic swelling studies, the diffusion exponent and the diffusion coefficient both increase with increasing content of IA.
PB - Elsevier Sci Ltd, Oxford
T2 - Polymer
T1 - Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid
EP - 155
IS - 1
SP - 148
VL - 47
DO - 10.1016/j.polymer.2005.11.002
ER -
@article{
author = "Kalagasidis-Krušić, Melina and Filipović, J",
year = "2006",
url = "http://TechnoRep.tmf.bg.ac.rs/handle/123456789/947",
abstract = "In this study, the swelling behaviour of copolymer hydrogels of N-isopropylacrylamide (NIPAM) and itaconic acid (IA) in response to temperature and pH value of the external media was studied. The equilibrium degree of swelling for PNIPAM and PNIPAM/IA copolymers was greater at 25 degrees C than at 37 degrees C. The degree of swelling was low at low pH values. As the degree of ionization increased above the nominal pK(a) values of IA, the increased hydrophilicity resulted in larger degrees of swelling. At 37 degrees C, the PNIPAM hydrogel and some copolymers show anomalous swelling behaviour, i.e. the overshooting effect, in buffered solutions of certain pH values. A swelling-deswelling study showed that the deswelling process of the hydrogels was faster then the swelling process. According to dynamic swelling studies, the diffusion exponent and the diffusion coefficient both increase with increasing content of IA.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer",
title = "Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid",
pages = "155-148",
number = "1",
volume = "47",
doi = "10.1016/j.polymer.2005.11.002"
}
Kalagasidis-Krušić, M.,& Filipović, J. (2006). Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid.
Polymer
Elsevier Sci Ltd, Oxford., 47(1), 148-155.
https://doi.org/10.1016/j.polymer.2005.11.002
Kalagasidis-Krušić M, Filipović J. Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid. Polymer. 2006;47(1):148-155
Kalagasidis-Krušić Melina, Filipović J, "Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid" Polymer, 47, no. 1 (2006):148-155,
https://doi.org/10.1016/j.polymer.2005.11.002 .
