环境响应型智能高分子凝胶

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)(F3TAA)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。

Intelligent polymer gels with environmental responses

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.