期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 34, 期 1, 页码 63-68出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201200548
关键词
diaminotriazine; high strength hydrogel; hydrogen bonding; pH responsive; phenylboronic acid
资金
- National Natural Science Foundation of China [50973082, 21274105]
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.
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