Copolymer hydrogels based on N-isopropylacrylamide and itaconic acid
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2006
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Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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.
Ključne reči:
N-isopropylacrylamide / itaconic acid / 'overshooting' effectIzvor:
Polymer, 2006, 47, 1, 148-155Izdavač:
- Elsevier Sci Ltd, Oxford
DOI: 10.1016/j.polymer.2005.11.002
ISSN: 0032-3861
WoS: 000234617600021
Scopus: 2-s2.0-29144441070
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Kalagasidis Krušić, Melina AU - Filipović, Jovanka 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, Jovanka", 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" }
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
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 .
Kalagasidis Krušić, Melina, Filipović, Jovanka, "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 . .