采用ATRP反应合成嵌段共聚物P(n-BMA-b-NIPAM)的研究  

Study on Synthesis of Block Copolymer P(n-BMA-b-NIPAM) with ATRP System

作　　者：姜雪琴 王新红[2] 武传成 

机构地区：[1]大连塑料研究所有限公司,辽宁大连116033 [2]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《塑料科技》2014年第5期46-50,共5页Plastics Science and Technology

摘　　要：采用原子转移自由基聚合(ATRP)反应合成了甲基丙烯酸正丁酯/N-异丙基丙烯酰胺嵌段共聚物(P(n-BMAb-NIPAM))。考察了引发剂、催化剂、反应温度等对聚合反应结果的影响,最终确定较为合适的反应条件,制备出分子量确定、分子量分布较窄的大分子引发剂,并成功引发第二单体继续通过ATRP反应,获得P(nBMA-b-NIPAM)。研究结果表明:所确定的ATRP反应体系能实现n-BMA的可控聚合,获得末端带溴原子的聚甲基丙烯酸正丁酯(P(n-BMA-Br))作为大分子引发剂继续通过ATRP反应引发N-异丙基丙烯酰胺(NIPAM),最后获得分子量确定、分子量分布较窄的嵌段共聚物P(n-BMA-b-NIPAM)。实验证明,利用高价态铜络合体系可以实现单体的可控聚合,而且可以保持聚合物末端较高的卤官能度。n-Butyl methacrylate/N-isopropylacrylamide diblock copolymers （P（n-BMA-b-NIPAM）） were synthesized thorugh atom transfer radical polymerization （ATRP）. The influences of the initiator, catalyst and reaction temperature on the polymerization results were researched, and the appropriate reaction conditions were determined. Several macro-initiators with certain molecular weight and narrow distribution were prepared, which successfully initiated the second monomer to reactive in the same ATRP system; finally, P（n-BMA-b-NIPAM） were prepared. The results show that： the controlled polymerization of monomers such as n-butyl methacrylate（n-BMA） can be successfully realized by ATRP system, corresponding macro-initiators PBMA-Br with bromine end group are prepared, which initiated the controlled polymerization of NIPAM polymerization, block copolymers P（n-BMA-b-NIPAM） are eventually obtained with determined molecular weight and narrow molecular weight distribution. It has demonstrated that the use of Cu II complex system can realize the controlled polymerization of such monomers and the polymer can maintain high end halogen functionality.

关 键 词：原子转移自由基聚合 甲基丙烯酸正丁酯 N-异丙基丙烯酰胺 嵌段共聚物 催化剂 

分 类 号：O631.3[理学—高分子化学]