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Synthesis of fluorinated polyethylene of different topologies via insertion polymerization with semifluorinated acrylates
Polymer Chemistry ( IF 4.6 ) Pub Date : 2020-09-04 , DOI: 10.1039/d0py00993h
Gen Li 1, 2, 3, 4, 5 , Guoyong Xu 1, 2, 3, 4, 5 , You Ge 1, 2, 3, 4, 5 , Shengyu Dai 1, 2, 3, 4, 5
Affiliation  

Fluoropolymers are widely used in high-end applications on account of their outstanding properties such as low surface energy and high thermal and chemical stability. In this contribution, we report the synthesis of fluorinated polyethylene via late-transition-metal-catalyzed ethylene copolymerization with semifluorinated acrylates. Fluorinated polymers with different topologies can be generated via insertion polymerization with various late-transition-metal catalysts. Linear main chain fluorinated polyethylene with a high incorporation of up to 25 mol% can be achieved via the PO-palladium-catalyzed ethylene and fluorinated acrylate copolymerization, while hyperbranched chain end fluorinated polyethylene with a high molecular weight of up to 270 kDa can be realized via α-diimine-palladium-catalyzed ethylene and fluorinated acrylate copolymerization. Compared with the pure polyethylene material, these fluorinated polyethylenes possess much lower surface energy.

中文翻译:

通过半氟化丙烯酸酯的插入聚合合成不同拓扑结构的氟化聚乙烯

含氟聚合物由于其出色的性能(例如低表面能以及高的热和化学稳定性)而广泛用于高端应用。在这一贡献中,我们报告了通过半金属丙烯酸酯与过渡金属催化的乙烯共聚反应合成氟化聚乙烯。具有不同拓扑结构的氟化聚合物可以通过使用各种后期过渡金属催化剂进行插入聚合来生成。线性主链氟化聚乙烯的最高掺入量可达25摩尔%,可通过PO-钯催化的乙烯与氟化丙烯酸酯的共聚,而高支链的端基氟化聚乙烯可通过α-二亚胺-钯催化的乙烯与氟化丙烯酸酯的共聚来实现分子量高达270 kDa 。与纯聚乙烯材料相比,这些氟化聚乙烯具有低得多的表面能。
更新日期:2020-10-13
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