SYNTHESIS AND CHARACTERISTICS OF POLY(ARYLENE ETHER DIKETONE)S

• 来源期刊: 高分子科学（英文版）
• 学科: 化学
• 年，卷（期）: 1998,（4）
• 页码范围: 316-326
• 页数: 11页
• 分类号: O6
• 语种: 英文

摘要

Poly(arylene ether diketone)s were prepared by the aromatic nucleophilic displacement reaction of 4,4'-difluorobenzil with different bisphenols in the presence of anhydrous potassium carbonate in diphenylsulfone at elevated temperature. The polymers obtained had inherent viscosity of 0.51 ～ 0.63 dL/g, and exhibited glass transition temperature ranging from 136 ～ 217℃ mainly depending on the bisphenols used in the polymer synthesis. Thermogravimetry of these polymers showed excellent thermal stability, indicating that 10% weight losses of the polymers were observed in the range above 428℃ and 438℃ in air and nitrogen, respectively. The mechanical properties of these polymers were also described and the permeability of five polymers for H2, O2 and N2 was determined at 30℃.