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.

引用

页码：685 / 693

页数：9

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