Double Hydrogen-Bonding pH-Sensitive Hydrogels Retaining High-Strengths Over a Wide pH Range

被引：75

作者：

Gao, Han ^{[1
]}

Wang, Ning ^{[1
]}

Hu, Xiufeng ^{[1
]}

Nan, Wenjing ^{[1
]}

Han, Yanjiao ^{[1
]}

Liu, Wenguang ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Tianjin 300072, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2013年 / 34卷 / 01期

基金：

中国国家自然科学基金;

关键词：

diaminotriazine; high strength hydrogel; hydrogen bonding; pH responsive; phenylboronic acid; HIGH MECHANICAL STRENGTH; POLYMER HYDROGELS; IONS;

D O I：

10.1002/marc.201200548

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Traditional pH-sensitive hydrogels inevitably suffer strength deterioration while the responsive weak acid or base groups are in the ionized state. In this study, we report on a facile approach to fabricate a novel pH-sensitive high-strength hydrogel from copolymerization of two hydrogen-bonding motif-containing monomers, 3-acrylamidophenylboronic acid and 2-vinyl-4,6-diamino-1,3,5-triazine with a crosslinker N,N-methylenebisacrylamide through hydrophilic optimization of the comonomer oligo(ethylene glycol) methacrylate. The double hydrogen bonding hydrogel exhibits both high tensile and compressive strengths over a broad pH range due to the unique ability to maintain at least one type of hydrogen-bonding crosslink over the whole course of pH change.

引用

页码：63 / 68

页数：6

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