Temperature and pH responsiveness of poly-(DMAA-co-unsaturated carboxylic acid) hydrogels, synthesized by UV-irradiation

被引：24
作者：
Kakinoki, S
Kaetsu, I
Nakayama, M
Sutani, K
Uchida, K
Yukutake, K
机构：
[1] Kinki Univ, Fac Sci & Technol, Dept Nucl Engn, Higashiosaka, Osaka 5778502, Japan
[2] Kinki Univ, Interdisciplinary Grad Sch Sci & Technol, Higashiosaka, Osaka 5778502, Japan
来源：
RADIATION PHYSICS AND CHEMISTRY | 2003年 / 67卷 / 05期
关键词：
polyampholyte hydrogel; temperature responsiveness; pH responsiveness; dimethyllaminoethyl methacrylate; unsaturated carboxylic acid;
D O I：
10.1016/S0969-806X(02)00401-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Stimuli-responsive polyampholyte hydrogels were synthesized by the copolymerization of dimethylaminoethyl methacrylate (DMAA) and acrylic acid (AAc) or itaconic acid (IAc) by UV-irradiation. Temperature and pH responsiveness of these hydrogels were studied. The temperature responsiveness of poly-(DMAA-co-AAc, lAc) hydrogels shown in change of water content became dull compared to that of DMAA homo-polymer hydrogel. The water content of the poly-(DMAA-co-AAc, IAc) hydrogels showed a minimum at pH 8, and increased in more acidic and alkaline regions. This fact can be attributed to the coexistence of anions and cations in the poly-(DMAA-co-AAc, lAc) hydrogels. The poly-(DMAA-co-AAc, IAc) hydrogels were polyampholyte having both temperature responsiveness and pH responsiveness. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码：685 / 693
页数：9
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