两亲嵌段共聚物P(St)-b-P(HEA)的合成、表征及其胶束化行为研究  

Synthesis,Characterization and Micellization Properties of Amphiphilic Block Copolymer P(St)-b-P(HEA)

作　　者：吴秀勇[1] 韩春蕊[1] 李兰英[1] 胡正水[1] 

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2005年第5期386-390,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：以2-溴代异丁酸乙酯(EBiB)为引发剂,溴化亚铜(CuBr)和α,α′-联吡啶(bpy)分别为催化剂和配体,通过原子转移自由基聚合法(ATRP)制备了两亲嵌段共聚物P(St)-b-P(HEA)。利用FT-IR、GPC和TG/DTG对产物进行了表征,确定合成产物为P(St)-b-P(HEA)两嵌段共聚物。用透射电镜(TEM)观察了其在5∶95(VTHF∶VH2O)混合溶剂中的胶束化行为,发现其胶束呈分散球状体和链状聚集体两种形态。Using ethyl 2-bromoisobutyrate（EBiB）as initiator, CuBr as catalyst and bpy as ligand, the amphiphilic block copolymer of P（St）-b-P（HEA） was synthesized by atom transfer radical polymerization（ATRP） and characterized by FT-IR, GPC and TG/ DTG. The results showed that the obtained copolymer was of the block structure of P（St）-b-P（HEA）. Its micellization properties in 5 ： 95（VTnF ： VH2O） solvent were stud- ied by TEM. Two different micellar morphologies, separate spheroid and catenulate aggregate were observed.

关 键 词：两亲嵌段共聚物 ATRP 表征 胶束化行为 

分 类 号：O631.2[理学—高分子化学] TQ316.344[理学—化学]