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近年来,智能水凝胶得到了广泛而深入的研究.然而大多数水凝胶的结构脆弱,易于破损或断裂,限制了它的实际应用.为解决这一难题,我们设计了基于氢键作用的高强度水凝胶,利用自由基溶液聚合的方法,选择生物相容性好的单体,制备了聚(丙烯酸钠-甲基丙烯酸羟乙酯)(P(AANa-co-HEMA))水凝胶,并对其力学性能和溶胀率进行了表征.结果表明,正是凝胶网络中高分子链之间的氢键作用,形成了凝胶网络中的可逆的氢键交联点,因此该水凝胶具有良好的力学性能,在不同的酸度和盐度环境中具有几十至几百倍的溶胀率.
In recent years, intelligent hydrogels have been extensively and deeply studied, however, most hydrogels are fragile and easy to be damaged or broken, thus limiting their practical applications.In order to solve this problem, we designed a hydrogels based on hydrogen bonding Poly (sodium acrylate-hydroxyethyl methacrylate) (P (AANa-co-HEMA)) water was prepared by the free radical polymerization and the selection of biocompatible monomers. Gel and its mechanical properties and swelling rate were characterized.The results show that it is the hydrogen bond between the polymer chains in the gel network to form a reversible hydrogen bond crosslinking point in the gel network, Hydrogels have good mechanical properties and have tens to hundreds of times the swelling rate in different acidity and salinity environments.