具有非共平面支化点结构的超支化聚芳醚酮的分子设计与合成

Hyperbranched poly(aryl ether ketone)s (HBPAEKs) are a kind of amorphous polymer materials. The special topology of hyperbranched structure which can avoid mainchain entanglement and crystallization endows the good properties of solubility, rheology, etc. The performance as a processing agent applied in solution casting film forming is good. The topic of the HBPAEKs struck much attention in the field of macromolecule synthesis. This project is aiming at designing and preparing the HBPAEKs resin with structure of non-planar branching points synthesized from the novel B3 monomer, trifunctional tritypcene. The degree of branching, mainchain structure and ending groups are precisely modulated. The project studies the influence laws of the branching degree and mainchain structure on the Tg and the solubility of the polymer. The relationship is detailed researched among the HBPAEKs structure, rheological property of the solution and the properties of the casting films. A novel series of HBPAEKs is designed as high performance processing agent which can maintain the heat resistence, mechanical properties of the film, and is suitable for the forming of the solution casting film.

超支化聚芳醚酮是一种无定形高分子材料，特殊的拓扑结构避免高分子链缠结，不易结晶，具有提高溶解性能、改善流变行为等作用。作为助剂应用在溶液流延薄膜制备中具有良好的成膜性，已成为高分子合成领域中备受关注的一类课题。本项目设计新型结构B3型单体三官能团三蝶烯，制备具有非共平面支化点结构的超支化聚芳醚酮树脂，并对支化度、链结构、端基等实现精细调控。从超支化聚芳醚酮结构与铸膜液流变性能以及溶液流延膜性能之间关系入手，探索设计一类既可保持薄膜耐热性、机械性能，又适合于溶液流延法工艺的新型高性能助剂。

超支化聚芳醚酮是一种无定形高分子材料，特殊的拓扑结构避免高分子链缠结，不易结晶，具有提高溶解性能、改善流变行为等作用，作为助剂应用在溶液流延薄膜制备中具有良好的成膜性，已成为高分子合成领域中备受关注的一类课题。本项目设计新型结构B3型单体三官能团三蝶烯，制备了以三叠烯为骨架的具有非平面支化点结构超支化聚芳醚酮（HBPEK-Tp），并对支化度、链结构、端基等实现精细调控。从超支化聚芳醚酮结构与铸膜液流变性能以及溶液流延膜性能之间关系入手，探索设计一类既可保持薄膜耐热性、机械性能，又适合于溶液流延法工艺的新型高性能助剂。经研究发现，当HBPEK-Tp的质量分数（mHBPEK-Tp:mPEK-C）为3%-8%时，聚芳醚酮铸膜液的溶液粘度降低，并可将铸膜液浓度提高到30%，溶剂用量减少15.2%。