ATRP和ATRC法结合制备多环状支化聚苯乙烯  

Synthesis of Multicyclic Branched Polystyrene via ATRP and ATRC

作　　者：于文超 陈杨静 薛小强 YU Wenchao;CHEN Yangjing;XUE Xiaoqiang(Jurong Ningwu New Materials Co.,Ltd.,Jurong 212400,China;School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]句容宁武新材料股份有限公司,江苏句容212400 [2]常州大学材料科学与工程学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2022年第5期15-22,共8页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(21474010);中国博士后科学基金资助项目(2016M601785);常州大学科技资助项目(ZMF1002118)。

摘　　要：通过原子转移自由基聚合(ATRP)与原子转移自由基偶合(ATRC)技术相结合,制备出了高分子质量多环拓扑结构聚合物。首先用甲基丙烯酸(α-溴异丁酰氧基乙基)酯(BiBEM),引发苯乙烯进行自由基聚合,制备出含溴末端的支化聚苯乙烯,并通过沉降分级得到高分子质量、低分散性聚合物。最终,以支化聚合物为前驱体,在极稀浓度条件下,通过ATRC反应,使其支链末端偶合成环,制备出高分子质量多环状支化聚合物。用核磁(1H NMR)、三检测体积排阻色谱仪(TD-SEC)、动静态光散射(DLS)对聚合物结构进行表征。结果表明,成功合成了结构明确、纯度较高的环状支化聚合物(c-BPS),聚合物表现出了高分子质量、低分散性的特性。A facile and efficient method to construct a multicyclic branched polymer through combining atom transfer radical polymerization(ATRP)and atom transfer radical coupling(ATRC)technologies is introduced.Firstly,the branched polystyrene was prepared by ATRP using 2-(2-bromoisobutyryloxy)ethyl methacrylate(BiBEM)as the branching agent.And then Br terminal-Br terminal radical coupling of BPS was conducted through ATRC under a high dilute solution.The obtained multicyclic polymers(c-BPS)exhibit a rare characteristic of narrow dispersity and endless structure.The structure and property of the resulted polymers have been characterized by triple detection size exclusion chromatography(TD-SEC),nuclear magnetic resonance spectroscopy(^(1)H NMR)and dynamic light scattering(DLS).The results show that the well-defined and high purity multicyclic branched polystyrene(c-BPS)have been synthesized successfully.

关 键 词：原子自由基偶合 支化聚合物 多环状聚合物 

分 类 号：O633.4[理学—高分子化学]