Gradual phase transition of poly(N-isopropylacrylamide-co-acrylic acid) gel induced by electric current

被引：26
作者：
Shin, BC [1 ]
Kim, SS [1 ]
Ko, JK [1 ]
Jegal, J [1 ]
Lee, BM [1 ]
机构：
[1] Korea Res Inst Chem Technol, Adv Mat Div, Taejon 305600, South Korea
来源：
EUROPEAN POLYMER JOURNAL | 2003年 / 39卷 / 03期
关键词：
gradual phase transition; temperature-sensitive hydrogel; electric current; copolymer;
D O I：
10.1016/S0014-3057(02)00187-8
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The copolymer gels showing gradual phase transition induced by temperature were synthesized by redox random copolymerization of N-isopropylacrylamide (NIPAAm) and acrylic acid (AAc) monomer under a constant electric current. The behavior of gradual phase transition induced by temperature was examined by measuring the thermal properties, pKa values and swelling ratio. The experimental results indicate that temperature-induced gradual phase transitions of poly(NIPAAm-co-AAc) gel are mainly driven by transport before polymerization and protonation/ ionization of the AAc, caused by the electric current. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：579 / 584
页数：6
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