α,ω–链端功能化聚烯烃的设计与合成新进展  

Design and Synthesis of α,ω-Chain End Functionalized Polyolefins

作　　者：姜涛[1] 许芳[1,2] 董鹏[1,2] 马志[2] 

机构地区：[1]天津科技大学化工与材料学院,天津300457 [2]中国科学院上海有机化学研究所,上海200032

出　　处：《天津科技大学学报》2016年第3期1-10,共10页Journal of Tianjin University of Science & Technology

基　　金：国家自然科学基金资助项目(21374130)

摘　　要：链端功能化聚烯烃的设计与合成是近些年来的研究热点之一.合成α,ω–链端功能化聚烯烃的方法较多,活性聚合一般需要适当的金属催化剂,得到的聚合物相对分子质量分布窄,而且单体消耗完以后聚合物链仍保持活性,加入新的单体以后增长可以继续进行,以此来制备嵌段共聚物,也可以加入终止剂终止聚合反应制备双端功能化聚烯烃.叶立德同源聚合通过引入带有不同功能基团的硼烷与叶立德进行反应,得到不同反应性基团封端的聚烯烃,再经过进一步的基团转化反应,可以得到多种不同的端基功能化的聚烯烃.此外,烯烃聚合过程中向链转移剂进行链转移反应、开环易位聚合以及与点击化学结合都可以用来制备链端功能化的聚烯烃.链端功能化聚烯烃不仅可以用作聚合物改性剂,而且更是构筑其他更复杂结构大分子的出发点,例如嵌段共聚物、接枝共聚物以及更为复杂的聚合物分子刷.Design and synthesis ofα,ω-chain end functionalized polyolefins have become one of the hot research topic in recent years.There are some methods for synthesizingα,ω-chain end functionalized polyolefins.The living polymerization generally requires appropriate metal catalyst,the product has narrow molecular weight distribution,and the polymer chain is still active after the monomer consumption.Polymerization can still go on when adding new monomer.It can be usedto prepare block copolymer.Moreover,difunctionalized polyolefins can be got by using terminator.By introuducing trialkylbo-rane in polyhomologation,reactive group terminated polyolefins can be obtained.Successive chemical modification of the chain end group can result in various polyolefins.In addition,chain transfer reaction in the polyolefin polymerization,ring-opening metathesis polymerization,as well as the combination of both methods with “Click” reaction are all the main ways of synthesizing chain end functionalized polyolefins.The polyolefins not only can be used as polymer modifier,but also are starting points for other more complex structures,such as block copolymers,graft copolymers,and more complex polymer brushes.

关 键 词：聚烯烃 α ω–链端功能化 链转移反应 活性聚合 叶立德同源聚合 “Click”反应 

分 类 号：O632.1[理学—高分子化学]