开环易位烯烃聚合物的动态交联改性研究进展  

Progress in dynamically crosslinked polyolefins derived from ring-opening metathesis polymerization

作　　者：吴立盛 刘杰 王添添 罗正鸿[1] 周寅宁[1] WU Lisheng;LIU Jie;WANG Tiantian;LUO Zhenghong;ZHOU Yinning(School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《化工学报》2024年第4期1118-1136,共19页CIESC Journal

基　　金：国家自然科学基金项目(22078195,22222807)。

摘　　要：开环易位聚合(ROMP)为烯烃聚合物的制备提供了一种精确而高效的方法,可制备不同拓扑结构的功能性热塑性烯烃聚合物材料。热塑性烯烃聚合物尽管可以在高温下熔融再加工,但其较低的力学性能和耐热性能限制了其在极端条件下的使用寿命。通过固化交联改性则可以大大改善材料的力学性能等,但也为废旧材料的回收再利用带来了困难。为克服上述局限,构建含有动态键的烯烃聚合物交联网络引起了广泛关注,该类聚合物在提升力学等性能的同时也赋予了其可重复加工的能力。本文聚焦于通过开环易位聚合合成不同拓扑结构的烯烃聚合物,并利用不同类型动态键对其进行动态交联改性的最新研究进展。并对该领域的发展现状和未来研究方向进行了总结。Ring-opening metathesis polymerization(ROMP)provides a precise and efficient way to prepare polyolefins,which enables the preparation of functional polymer materials with different topological structures.Although thermoplastic olefin polymers can be melted and reprocessed at high temperatures,their low mechanical properties and heat resistance limit their service life under extreme conditions.In general,the thermomechanical properties of polyolefin materials can be greatly improved by crosslinking modification,but it also brings difficulties to the recycling of waste materials.To address above limitations,fabricating dynamically crosslinked polyolefins with dynamic bonds has attracted extensive attentions.These polymers enhance mechanical properties while retaining the ability to be reprocessed.This review article focuses on the recent progress of polyolefins that are synthesized via ring-opening metathesis polymerization and followed by dynamically crosslinking modification.Finally,the development status and future research of this field are summarized.

关 键 词：烯烃聚合物 开环易位聚合 动态交联 可逆交联 自修复 重加工 

分 类 号：TQ028.8[化学工程]