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Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid

Authorized Users Only
2006
Authors
Kalagasidis-Krušić, Melina
Filipović, J.
Article (Published version)
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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.
Keywords:
N-isopropylacrylamide / itaconic acid / 'overshooting' effect
Source:
Polymer, 2006, 47, 1, 148-155
Publisher:
  • Elsevier Sci Ltd, Oxford

DOI: 10.1016/j.polymer.2005.11.002

ISSN: 0032-3861

WoS: 000234617600021

Scopus: 2-s2.0-29144441070
[ Google Scholar ]
74
67
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/947
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
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
UR  - conv_2635
ER  - 
@article{
author = "Kalagasidis-Krušić, Melina and Filipović, J.",
year = "2006",
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",
url = "conv_2635"
}
Kalagasidis-Krušić, M.,& Filipović, J.. (2006). Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid. in Polymer
Elsevier Sci Ltd, Oxford., 47(1), 148-155.
https://doi.org/10.1016/j.polymer.2005.11.002
conv_2635
Kalagasidis-Krušić M, Filipović J. Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid. in Polymer. 2006;47(1):148-155.
doi:10.1016/j.polymer.2005.11.002
conv_2635 .
Kalagasidis-Krušić, Melina, Filipović, J., "Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid" in Polymer, 47, no. 1 (2006):148-155,
https://doi.org/10.1016/j.polymer.2005.11.002 .,
conv_2635 .

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