Recent key developments in isotactic polypropylene in-reactor alloy and in-reactor nanocomposite technology
Recent key developments in isotactic polypropylene in-reactor alloy and in-reactor nanocomposite technology
复制标题
等规聚丙烯反应器内合金和反应器内纳米复合材料技术的最新关键进展
DOI：
10.1007/s11426-016-0174-3
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Qin Yawei
中科院分区：
文献类型：
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作者：
Dong Jinyong;Qin Yawei
等规聚丙烯（iPP）是世纪最有前途的聚合物之一，合金化和纳米复合是赋予其高性能以满足日益苛刻的高端应用的两种最有效的技术。由于催化剂技术的不断进步，反应器内合成法是制备iPP合金和纳米复合材料的技术发展趋势，其性能和经济优势是毋庸置疑的。本文综述了我们实验室在iPP反应器内合金化和反应器内纳米复合技术方面的两个最新进展，它们将对iPP改性技术的持续发展产生深远的影响。（乙烯-丙烯无规共聚物）交联化学，用于控制反应器内合金化期间的物理生长模式，这有助于消除迄今为止极大限制iPP反应器内合金化技术的EPR成分上限。第二个是纳米填料支撑制造策略，用于同时控制纳米填料分散体的相形态和合成的纳米复合材料的聚合物颗粒形态，其解决了围绕iPP反应器内纳米复合技术的关键放大问题。在此基础上，展望了iPP材料的新进展。
Alloying and nanocompositing are two most effective techniques by which isotactic polypropylene (iPP), one of the most promising polymers of the 21st 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.