温度和pH响应型水凝胶的制备及性能研究  

Research on Preparation and Characterization of a Temperature and pH-sensitive Hydrogel

作　　者：陈广辉[1] 张薇[1] 吴道江[1] 陈洪事 韦晓云[1] 王毓[1] 

机构地区：[1]贵州师范学院化学与生命科学学院,贵州贵阳550018

出　　处：《广东化工》2014年第17期39-40,54,共3页Guangdong Chemical Industry

基　　金：贵州师范学院大学生科研项目(2013DXS060);贵州省省级大学生创新训练项目(201314223006);贵州省自然科学基金项目(黔科合J字[2013]2245号);贵州省教厅招标项目(黔教合KY字[2013]166);中科院"西部之光"博士人才资助计划(科发人教字[2011]180号);贵州师范学院校级课题(12BS026);贵州省应用化学特色重点学科(黔教科研发[2012]442号)

摘　　要：采用双丙酮丙烯酰胺、丙烯酰胺和丙烯酸为原料,以N,N'-亚甲基双丙烯酰胺为交联剂,2-酮戊二酸为光引发剂,采用光引发聚合方法制备了具有温度和pH响应型水凝胶。研究了水凝胶在不同温度和pH条件下的溶胀性能。结果表明,随着温度的升高,水凝胶的溶胀率降低,随着pH的增加,水凝胶的溶胀率增加,表现出明显的温度、pH双重响应性。A temperature and pH dual stimuli-responsive hydrogel was synthesized by solution copolymerization of diacetone acrylamide, acrylamide, and acrylic acid, in the presence of N, N ＇-methylene bisacrylamide as cross linker, and 2-ketoglutaric acid as initiator. The swelling behavior of the resultant hydrogel were investigated at various temperatuer and pH values. The results showed that the swelling ratios of the hydrogels decreased with increasing temperature. However, the swelling ratios diminished with the decrease of pH values. The resultant hydrogel shows temperature-, pH-sensitive features.

关 键 词：水凝胶 温度敏感 PH敏感 双丙酮丙烯酰胺 

分 类 号：TQ[化学工程]