环境响应型智能高分子凝胶  

Intelligent polymer gels with environmental responses

作　　者：陈莉[1] 韩永良[1] 赵义平[1] 

机构地区：[1]天津工业大学材料科学与化学工程学院,天津300160

出　　处：《天津工业大学学报》2004年第4期83-87,共5页Journal of Tiangong University

基　　金：国家自然科学基金资助项目 (2 0 1 740 2 7);天津市自然科学基金 (0 3 3 6 1 0 51 1 )

摘　　要：结合智能高分子凝胶的发展现状介绍笔者近几年的研究成果:由温度敏感型N 异丙基丙烯酰胺(NIPAM)与氯化三甲基 3 丙烯酰胺丙基胺(DMAPAA Q)构成的共聚阳离子凝胶具有LCST特性和很好的溶胀性能,而半互穿温敏凝胶PDMAPS/PAMPS显示UCST特性,且在UCST附近不发生体积变化;将侧链含偶氮苯基的丙烯酰胺基偶氮苯单体(AAAB)与丙烯酸(AA)共聚合成了一种新型功能高分子P(AA co AAAB),具有pH和光双重响应性能;合成的导电聚(3 羧甲基噻吩)(P3TAA)水凝胶具有pH敏感性,且用高氯酸作掺杂剂对水凝胶的掺杂行为进行研究发现,高氯酸极易使聚噻吩凝胶掺杂,而且一旦掺杂则在掺杂状态下具有相对的稳定性.The environmental responses of the intelligent polymer gels is introduced, which have been studied by the author in recent years. Thermosensitive cationic hydrogels synthesized by copolymerization of N-isopropylacrylamide (NIPAM) and acryloylamino propyl trimethyl ammonium chloride (DMAPAA-Q) exhibit LCST and much better swelling properties. The thermosensitive semi-IPN PDMAPS/PAMPS hydrogel is able to show UCST and no volume phase transition upon UCST. A series of poly(AA-co-AAAB) gels were prepared by radical copolymerizing of a monomer with a side-chain azobenzide, acrylamido-azobenezene (AAAB) and acrylic acid (AA). These gels show a good pH and photo responsivities. The synthesized conducting poly(3-thiopheneacetic acid)(P3TAA) shows pH sensitive. The doping behaviors of P3TAA gel using HClO_4 solution as a dopant have been studied. It is found that P3TAA gel could easily be doped by HClO_4 and the HClO_4-doped P3TAA gels show relative stable.

关 键 词：环境响应 智能高分子 温敏水凝胶 光敏水凝胶 导电水凝胶 

分 类 号：O631[理学—高分子化学] TQ317[理学—化学]