用MADIX/RAFT聚合合成聚(N-乙烯基己内酰胺)  

Synthesis of Poly( N- vinylcaprolactam) by MADIX / RAFT Polymerization

作　　者：王德强[1] 刘玲琪[1] 何福喜 闵晓燕[1] 毕韵梅[1] 

机构地区：[1]云南师范大学化学化工学院,云南昆明650500

出　　处：《广州化工》2015年第12期45-46,52,共3页GuangZhou Chemical Industry

基　　金：国家自然科学基金项目(20864003;21264017)

摘　　要：MADIX/RAFT聚合是黄原酸酯调控的可逆加成-断裂链转移自由基聚合,它可用于调控非共轭单体的活性/可控自由基聚合。以乙二醇为原料,将乙二醇的两个羟基转化为O-乙基黄原酸酯,得到黄原酸酯双官能团链转移剂(CTA)。用这个CTA调控N-乙烯基己内酰胺(NVCL)的MADIX/RAFT聚合,合成了聚(N-乙烯基己内酰胺)。用1H NMR谱证明了所得聚合物和中间产物的结构。Macromolecular design via interchange of xanthates （ MADIX）/reversible addition-fragmentation chain transfer （ RAFT ） polymerizations have demonstrated the most promise for the controlled polymerization of unconjugated monomers.A bis（ bromopropionate ） was first synthesized by reaction of ethylene glycol with 2-bromopropionyl bromide.The resulting bromo end groups were converted to two chain transfer end groups （ O-ethyl xanthate ） via a substitution reaction with potassium ethyl xanthogenate , yielding a xanthate difunctional chain transfer agent （ CTA ）.Poly （ N-vinylcaprolactam ） was synthesized via MADIX/RAFT polymerization of N-vinylcaprolactam by employing the CTA.The structure of the polymer and its intermediate products was characterized by 1 H NMR spectra.

关 键 词：聚(N-乙烯基己内酰胺) MADIX/RAFT聚合 双官能团链转移剂 

分 类 号：O63[理学—高分子化学]