温敏性P(NIPAAm-co-Am)/MMT水凝胶复合材料的研究  

Property of Temperature-Sensitive Poly(N-Isopropylacryamide-coAcrylamide)/Montmorillonite Hydrogel Composites

作　　者：刘延平[1] 孔炎炎[1] 李素华[1] 贾福强[1] 于跃芹[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《胶体与聚合物》2012年第1期27-29,共3页Chinese Journal of Colloid & Polymer

基　　金：山东省自然科学基金(Y2006B10);青岛市科技计划基础研究项目(09-1-3-33-JCH)

摘　　要：以N-马来酰化壳聚糖为交联剂,N-异丙基丙烯酰胺(NIPAAm)、丙烯酰胺(Am)、蒙脱土(MMT)为原料,过硫酸铵和N,N,N’,N’-四甲基乙二胺为引发剂和促进剂,采用水溶液自由基聚合反应合成了温敏性的P(NIPAAm-co-Am)/MMT水凝胶复合材料,研究了复合材料的温敏性、溶胀动力学、退溶胀动力学性能。研究表明:P(NIPAAm-co-Am)/MMT水凝胶复合材料具有良好的温敏性,不同蒙脱土含量的水凝胶的相转变温度(VPTT)均在37℃。由于水凝胶的大孔状结构,均表现出快速的溶胀动力学和退溶胀动力学。P（NIPAAm-co-Am）/MMT hydrogel composites were prepared by free radical polymerization in aqueous solution using biodegradable N-maleyl chitosan as cross-linker and N-isopropylacryamide （NIPAAm）, acrylamide （Am）andmontmorillonite （MMT） as materials. The temperature-sensitive behavior, swelling dynamics and deswelling dynamics of P（NIPAAm-co-Am）/MMT hydrogel composites were investigated. The results showed the hydrogel composites were very sensitive to temperature, the VPTT values were maintained at 37 ℃ by adding different contents of MMT. All the dried hydrogel samples exhibited fast swelling/deswelling behavior, which might be attributed to macroporous structures of the hydrogels.

关 键 词：水凝胶 复合材料 温敏性 蒙脱土 N-异丙基丙烯酰胺 

分 类 号：TQ317.3[化学工程—高聚物工业]