光-温度双重响应凝胶的制备及温敏性能研究  

Preparation and thermoresponse of dual responsive hydrogels with photo and temperature response

作　　者：赵义平[1] 陈莉[1] 张玉欣[1] 王刚[1] 陈志娴[1] 魏铮[1] 

机构地区：[1]天津工业大学材料科学与工程学院,中空纤维膜材料与膜过程省部共建国家重点实验室培育基地,天津300160

出　　处：《功能材料》2011年第1期161-163,170,共4页Journal of Functional Materials

基　　金：教育部科学技术研究重点资助项目(209005);国家高技术研究发展计划(863计划)资助项目(2007AA03Z533);国家自然科学基金资助项目(20774064)

摘　　要：采用自由基共聚合方法,将丙烯酰胺基偶氮苯(AAAB)与N-异丙基丙烯酰胺(NIPAAm)共聚,制备了一种具有温度和紫外光双重响应性的P(NIPAAm-co-AAAB)共聚凝胶,并研究了凝胶的温敏性。研究结果表明,P(NIPAAm-co-AAAB)凝胶具有温度响应性,且溶胀和退溶胀性能较好。与PNIPAAm凝胶相比,共聚凝胶平衡溶胀率降低。随共聚配比中AAAB含量的增大,共聚凝胶的低临界溶解温度(LCST)、平衡溶胀率和退溶胀速率均逐渐降低。A dual responsive hydrogels of poly（N-isopropylacrylamide-co-acrylamido azobenzene）（P（NIPAAm-co-AAAB）） was prepared via a free-radical copolymerization route with N-isopropylacrylamide（NIPAAm） and acrylamido azobenzene（AAAB） which contains of azobenzene groups and the thermoresponse behaviors were studied.The results disclosed that the P（NIPAAm-co-AAAB） hydrogels has temperature-sensitivity and the thermoresponsive behaviors was reversible and affected by the molar ratio of AAAB to NIPAAm.With the increase of the molar ratio,the LCST of the dual responsive hydrogels decreased.Compared with PNIPAAm hydrogels,the swelling ratio of the P（NIPAAm-co-AAAB） hydrogel decreased and with the molar ratio increased,the swelling ratio and deswelling speed decreased too.

关 键 词：N-异丙基丙烯酰胺 高分子凝胶 偶氮基团 紫外光响应性 温敏性 

分 类 号：O631[理学—高分子化学]