可逆络合聚合制备含悬垂双键超支化聚合物  

Synthesis of Hyperbranched Polymer with Pendent Double Bonds by Reversible Complexation-Mediated Polymerization

作　　者：杨宏军 任子叶 宋肄业 黄文艳 薛小强 蒋其民 江力 蒋必彪 Hongjun Yang;Ziye Ren;Yiye Song;Wenyan Huang;Xiaoqiang XueQimin Jiang;Li Jiang;Bibiao Jiang(Jiangsu Key laboratory of Environmentally Friendly Polymeric Materials,School of Materials Science and Engineering,Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering,Changzhou University, Changzhou 213164,China;Huaide College,Changzhou University,Jingjiang 214500,China)

机构地区：[1]江苏省绿色环保重点实验室常州大学材料科学与工程学院江苏省光伏科学与工程协同创新中心,江苏常州213164 [2]常州大学怀德学院,江苏靖江214500

出　　处：《高分子材料科学与工程》2020年第2期7-11,共5页Polymer Materials Science & Engineering

基　　金：江苏省自然科学优秀青年基金(BK2O17OO56);国家自然科学基金青年基金资助项目(21504009)。

摘　　要：在偶氮二异庚腈(V65)引发甲基丙烯酸烯丙酯(AMA)的传统自由基聚合体系中加入少量碘单质(I2)和碘化钠(NaI)就成功实现了AMA的"活性"/可控聚合,一步法制备了含大量悬垂双键的超支化聚合物。通过核磁共振(NMR)和三检测凝胶渗透色谱(TD-GPC)对所得聚合物的结构和聚合反应过程进行了分析和表征。结果表明,在此体系中AMA的转化率为81.9%时无交联反应发生,所得超支化聚合物数均相对分子质量为1.11×104,相对分子质量分布为6.62,其特性黏数和流体力学半径均小于相同相对分子质量的线型聚合物,具有明显的支化结构。在聚合反应过程中,单体转化率与反应时间呈一级动力学规律,具有典型的活性聚合特征。Hyperbranched polymers were successfully synthesized by one-pot reversible complexation-mediated polymerization(RCMP) of allyl methacrylate(AMA) in the presence of iodine(I2) and sodium iodide(NaI). The branched structure of the resulted polymers and the process of the polymerization were studied through nuclear magnetic resonance(NMR) and triple detection gel-permeation chromatograph(TD-GPC). The results show that the conversion of AMA reaches as high as 81.9% without gelation. The number-average molecular weight of the resulted polymer is 1.11×104 and the PDI is 6.62. The viscosity and the hydrodynamic radius of the resulted polymer are lower than those of the corresponding linear polymer, suggesting the branched structure of the resulted polymer. The first-order kinetic curve is linear, indicating the "living"/controlled nature of the polymerization.

关 键 词：超支化聚合物 悬垂双键 可逆络合聚合 甲基丙烯酸烯丙酯 

分 类 号：TQ317[化学工程—高聚物工业]