RAFT试剂存在下的苯乙烯与N-苯基马来酰亚胺细乳液共聚合  

Miniemulsion copolymerization of styrene and N-phenyl maleimide with RAFT agent

作　　者：燕春福 惠嘉[2] 石艳[3] 张志刚 韩文永 王书杰[2] 孟庆飞 张彦昌 张威 YAN Chunfu;HUI Jia;SHI Yan;ZHANG Zhigang;HAN Wenyong;WANG Shujie;MENG Qingfei;ZHANG Yanchang;ZHANG Wei(Hebei Shuangcheng Construction Engineering Testing Co.,Ltd.,Shijiazhuang 050031,China;China Academy of Transportation Science,Beijing 100029,China;State Key Laboratory of Chemical Resource and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Shanna Synthetic Rubber Technology Co.,Ltd.,Datong 038103,China)

机构地区：[1]河北双诚建筑工程检测有限公司,河北石家庄050031 [2]交通运输部科学研究院,北京100029 [3]北京化工大学化工资源有效利用国家重点实验室,北京100029 [4]山纳合成橡胶有限责任公司,山西大同038103

出　　处：《弹性体》2020年第2期32-35,共4页China Elastomerics

基　　金：石家庄市重点研发计划项目(201160144A)。

摘　　要：制备了S-丙酸-S′-(α-甲基-α′-乙酸)-三硫代碳酸酯(TTC),以TTC作为可逆加成-断裂链转移(RAFT)试剂,对苯乙烯(St)与N-苯基马来酰亚胺(NPMI)的细乳液共聚合进行了研究,用凝胶渗透色谱(GPC)、核磁共振(~1H NMR)对所得共聚物聚苯乙烯-N-苯基马来酰亚胺(PSt-NPMI)进行了分析。结果表明,在一定范围内,NPMI浓度增大,聚合反应速率提高,相对分子质量分布(Mw/Mn)变宽;NPMI与St发生交替共聚,不仅提高了St聚合的反应速率,而且引入了双官能团羧基,为实现乳聚丁二烯-苯乙烯橡胶(ESBR)官能化提供了思路。2-(2-Carboxyethylsulfanylthiocarbonylsulfanyl)propionic acid(TTC) was synthesized,which was a reversible addition-fragmentation chain transfer(RAFT) agent.The effect of TTC on the miniemulsion copolymerization of styrene and N-phenyl maleimide(NPMI) was researched.The copolymer was characterized by gel permeation chromatography and 1H NMR.The results show that the reaction rate increases and the molecular weight polydispersity index(Mw/Mn) becomes wider with the increase of NPMI concentration in a certain range.The alternate copolymerization of NPMI and styrene not only improves the reaction rate of St polymerization but also introduces a bifunctional carboxyl group,which provides a way to realize the functionalization of ESBR.

关 键 词：可逆加成-断裂链转移 细乳液共聚合 苯乙烯 N-苯基马来酰亚胺 

分 类 号：TQ316.37[化学工程—高聚物工业]