Thermosensitive hydrogels synthesized by fast Diels-Alder reaction in water

被引：103

作者：

Wei, Hong-Liang ^{[1
]}

Yang, Zhe ^{[1
]}

Zheng, Li-Mei ^{[1
]}

Shen, Yan-Min ^{[1
]}

机构：

[1] Henan Univ Technol, Sch Chem & Chem Engn, Zhengzhou 450001, Peoples R China

来源：

POLYMER | 2009年 / 50卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Diels-Alder hydrogels; Gelation; Water-accelerating effect; CLICK CHEMISTRY; POLYMERIZATION; COPOLYMER; POLYMERS; GELATION;

D O I：

10.1016/j.polymer.2009.04.032

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Novel thermosensitive hydrogels have been synthesized by aqueous Diels-Alder reaction of poly(N,N-dimethylacrylamide-co-furfuryl methacrylate) and N-[4-(formyl polyethylene glycol ester) bismaleimide. The gelation time was measured by a via] inversion method and the swelling behavior of dried hydrogel was studied by a general gravimetric method. It was found that water can accelerate Diels-Alder reaction while DMF can accelerate retro-Diels-Alder reaction. The gelation time decreases with the increase of temperature. Swelling/shrinking kinetics indicates that the as-prepared hydrogels have high swelling ratio and can respond to temperature. The strategy described here provides several advantages for the hydrogel formation including mild reaction conditions, no initiator or catalyzer, no organic solvent, tunable gelation rate, and thermal reversibility. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2836 / 2840

页数：5

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