活性自由基聚合法制备温度敏感聚(N-异丙基丙烯酰胺-co-丙烯酰胺)水凝胶及其性能研究  

Synthesis and properties of temperature sensitive P(NIPAM-co-AM) hydrogel by living radical polymerization

作　　者：张立武[1] 沈进明[1] 杨兴兵[1] 刘静[2] 

机构地区：[1]重庆大学化学化工学院,重庆400044 [2]重庆文理学院化学与环境工程学院,重庆402160

出　　处：《应用化工》2009年第11期1606-1608,1612,共4页Applied Chemical Industry

摘　　要：以水与二甲基甲酰胺作混合溶剂,选用五甲基二乙烯基三胺作ATRP的催化剂配体,实现了ATPR法制备P(NIPAM-co-AM)温敏性智能型水凝胶。通过提高组分中AM的摩尔分率,水凝胶溶胀率增加,其LCST也随之提高,溶胀速率加快。相对于传统自由基聚合法,利用ATRP法制备的P(NIPAM-co-AM)水凝胶具有最低临界温度(LCST)低,溶胀速率快,保水量高等特点。With water and dimethylformamide as solvent, pentamethyltriethylenetetramine as ligand, P（NIPAM-co-AM） thermosensitive and intelligent hydrogels were synthesized by ATRP. The results showed that the swelling ratio, swelling rate and LCST of the P（NIPAM-co-AM） hydrogel increased with increasing the mole fraction of AM monomers. Compare with radical polymerization, P （NIPAM-co-AM） prepared by ATRP have some characteristics such as a lower LCST （lower critical solution temperature）, quick swelling rate and high water-retention rate.

关 键 词：温度敏感 N-异丙基丙烯酰胺 丙烯酰胺 原子转移白fj=I基聚合 水凝胶 

分 类 号：O63[理学—高分子化学]