聚硫醚醚酮(砜)芳香环状低聚物的合成与自由基开环聚合

Synthesis and Free-radical Ring Opening Polymerization of Macrocyclic Aryl Thioether Ether Ketone(sulfone) Oligomers

在“拟高稀释”条件下 ,通过亲核缩聚反应高产率地合成了含硫醚键的芳香醚环状低聚物 .应用核磁、GPC和激光质谱 (MALDI-TOF MS)等手段对环状低聚物的结构进行了确认 ,并研究了环状低聚物的组分分布 .聚硫醚醚酮环状低聚物在硫醚自由基的引发下进行快速熔融聚合 。

Two kinds of novel macrocyclic aryl thioether ether oligomers were synthesized by nucleophilic condensation reaction in high yields under pseudo high dilution condition. A combination of 1H NMR, GPC and MALDI TOF MS analyses unambiguously confirmed the cyclic nature and their distributions. Macrocyclic thioether ether ketone oligomers can undergo facile melt ring opening polymerization(ROP) initiated by thiyl radical to give a high molecular weight polymer.