通过RAFT自由基聚合合成含叠氮端基的聚N-异丙基丙烯酰胺  

Synthesis of Azido-capped Poly(N-isopropylacrylamide) by RAFT Free Radical Polymerization

作　　者：帅亚[1,2] 苏鑫[1,2] 王毓[1,2] 冯玉军[1] 

机构地区：[1]中国科学院成都有机化学研究所,四川成都610041 [2]中国科学院研究生院,北京100039

出　　处：《合成化学》2009年第5期577-579,582,共4页Chinese Journal of Synthetic Chemistry

基　　金：四川省青年基金资助项目(07ZQ026-122);四川省应用基础研究资助项目(2008JY0002)

摘　　要：S-十二烷基-S-′(2-羧基-异丙基)三硫羧酸酯与叠氮乙醇反应合成了一种新型叠氮链转移剂(2);在2存在下通过可逆加成-断裂链转移(RAFT)自由基聚合合成了含叠氮端基的聚N-异丙基丙烯酰胺(3)。其结构经1H NMR,IR和GPC表征。研究结果表明,3呈现较好的温敏性,低临界溶液温度为28.5℃。A novel azido-terminated chain transfer agent （2） was prepared by the reaction of S-dodecyl-S＇- （2-carbosyl-isopropyl） trithiocarbonate with azido-ethanol. By reversible addition-fragmentation chain transfer（RAFF） free radical polymerization, an azido-capped poly （isopropylacrylamide） （3） was synthesized in the presence of 2. The structures were characterized by 1H NMR, IR and GPC. The result showed that 3 exhibited clear thermosensitivity, and its lower critical solution temperature was 28.5 ℃.

关 键 词：叠氮链转移剂 可逆加成-断裂链转移 自由基聚合 聚N-异丙基丙烯酰胺 温敏性 

分 类 号：O633.22[理学—高分子化学]