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

作者：Gao Han; Wang Ning; Hu Xiufeng; Nan Wenjing; Han Yanjiao; Liu Wenguang^*

来源：Macromolecular Rapid Communications, 2013, 34(1): 63-68.

DOI：10.1002/marc.201200548

• diaminotriazine
• high strength hydrogel
• hydrogen bonding
• pH responsive
• phenylboronic acid

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.

• 出版日期2013-1-11
• 单位天津大学