有序多孔水凝胶膜的制备及性能研究

Preparation and Properties of Ordered Porous Hydrogel Membranes

通过将多孔结构引入水凝胶膜,提高人工角膜材料含水量。首先,采用甲基丙烯酸缩水甘油酯(GMA)对氨基烷基封端聚二甲基硅氧烷(KF 8010)进行亲核取代反应,通过紫外聚合法制备无孔水凝胶膜。以单分散SiO_(2)颗粒为模板,制备含Si O2模板的多孔水凝胶膜,浸泡除去SiO_(2)模板得到多孔水凝胶膜。测试结果表明,多孔水凝胶膜具有三维网状结构,平衡含水量达到无孔水凝胶膜的3倍。

The porous structure was introduced into the hydrogel membrane to improve the water content of the artificial cornea.Firstly,the nucleophilic substitution reaction of amino alkyl terminated poly(two methylsiloxane)(KF 8010)was carried out by glycidyl methacrylate(GMA),and the porous hydrogel membrane was prepared by UV polymerization.The porous hydrogel membrane containing SiO_(2) template was prepared by using monodisperse SiO_(2) particles as template.The porous hydrogel membrane was obtained after immersion in SiO2 template.The test results show that the porous hydrogel membrane has three dimensional network structure,and the equilibrium water content is 3 times that of the non porous hydrogel membrane.