Recent key developments in isotactic polypropylene in-reactor alloy and in-reactor nanocomposite technology

作     者：Jinyong Dong Yawei Qin 

作者机构：CAS Key Laboratory of Engineering PlasticsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2016年第59卷第10期

页      面：1231-1239页

核心收录：

学科分类：08[工学] 082204[工学-皮革化学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0822[工学-轻工技术与工程] 

基　　金：supported by the National Natural Science Foundation of China(21574143 51373178) 

主　　题：isotactic polypropylene in-reactor alloy in-reactor nanocomposite key development 

摘      要：Alloying and nanocompositing are two most effective techniques by which isotactic polypropylene(iPP), one of the most promising polymers of the 21 st century, can be endowed with high performance for ever-demanding high-end applications. Thanks to the continuous advancement of catalyst technology, the technological trend for iPP alloy and nanocomposite fabrication has been projected to be in-reactor synthesis, the performance and economic advantages of which are beyond doubt. In this paper, we review two recent key developments in the iPP in-reactor alloy and in-reactor nanocomposite technology in our laboratory that will have profound influence on the continuing development of the prestigious iPP modification art. The first is the simultaneous EPR(ethylene-propylene random copolymer) cross-linking chemistry for controlling its physical growth pattern during in-reactor alloying, which helps to remove the compositional cap on EPR that so far greatly limits the iPP in-reactor alloying technique. The second is the nanofiller support fabrication strategy for simultaneously controlling both the phase morphology of the nanofiller dispersion and the polymer particle granule morphology of synthesized nanocomposites, which resolves the critical scale-up issue surrounding the iPP in-reactor nanocompositing technique. Based on these new developments, new advancements of iPP materials are envisaged.