聚烯烃后功能化:自由基接枝与碳氢活化  

Polyolefin Post Modification:Free Radical Grafting versus C—H Activation

作　　者：张勇杰[1] 李晓佩[1] 林子春 农海鑫 于翀[1] ZHANG Yong-jie;LI Xiao-pei;LIN Zi-chun;NONG Hai-xin;YU Chong(Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学,大连116034

出　　处：《高分子通报》2023年第10期1237-1247,共11页Polymer Bulletin

基　　金：辽宁省教育厅面上项目(LJKMZ20220902);中国石油科技创新基金(2021DQ02-0706)。

摘　　要：聚烯烃是消费量最大、应用最广泛的合成树脂。在聚烯烃结构中引入少量功能性基团,能够在保持聚烯烃固有优异性能的前提下,赋予聚烯烃极性、反应性、粘接性、抗氧化性、荧光性等多种功能特性,从而得到具有重要应用前景的功能化聚烯烃。后功能化法是制备功能化聚烯烃的主要方法之一。传统熔融自由基接枝(FRG)反应可控性低、副反应多,难以制备结构明确的高接枝量产物。使用新型引发体系,可提高FRG反应可控性,抑制副反应、提高接枝量。相比FRG反应,碳氢活化反应可控性强,可引入的功能性基团品类丰富,可用于高效合成结构明确、无副反应的新颖功能化聚烯烃。本文在简述FRG反应制备功能化聚烯烃的基础上,着重讨论近年来基于碳氢活化反应制备功能化聚烯烃的最新研究进展。Polyolefin is one of the most-consumed and most widely used synthetic resins.The incorporation of even a small amount of functional groups would endow polyolefin with polarity,reactivity,adhesiveness,antioxidant and fluorescence properties while maintaining their novel intrinsic properties,thus obtaining functional polyolefin with imperative applications.Post modification is nowadays the essential route to produce functional polyolefin.Suffering from poor control on the reaction process and inevitable side reactions,traditional free radical grafting(FRG)method can only produce ill-defined functional polyolefin with relatively low grafting ratios.Through utilization of new initiators,control on the grafting reactions can be enhanced,resulting in polyolefin with high grating ratios.Owing to its excellent control and diverse functional groups available,C—H activation has now emerged as a powerful tool to synthesize well-defined functional polyolefin.After a brief introduction on new developments on FRG,this review contributes a detailed survey on the advances on synthesis of functional polyolefin via efficient C—H activation.

关 键 词：聚烯烃后功能化 自由基 接枝 碳氢键 活化 催化 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]