Eaton's reagent in polybenzimidazole synthesis: The influence of temperature and microwave irradiation

被引：7
|
作者：
Olvera-Mancilla, Jessica [1 ]
Palacios-Alquisira, Joaquin [1 ]
Alexandrova, Larissa [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Posgrad Fac Quim, Lab Fis Quim Macromol, Mexico City, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City, DF, Mexico
来源：
HIGH PERFORMANCE POLYMERS | 2018年 / 30卷 / 06期
关键词：
Polybenzimidazoles; Eaton reagent; microwave irradiation; FUEL-CELL APPLICATIONS; SULFONATED POLYBENZIMIDAZOLES; CONDUCTING MEMBRANES; POLYMER; POLY(2,5-BENZIMIDAZOLE); ELECTROLYTE; SEPARATION; MONOMER;
D O I：
10.1177/0954008317716977
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The polycondensations of 3,3'-diaminobenzidine with two acids, 4,4'-oxybis(benzoic acid) and hexafluoroisopropylidene bis(benzoic acid), were conducted in Eaton's reagent at the unusually high temperature of 180 degrees C and under microwave irradiation at 90 degrees C. Both protocols resulted in soluble polybenzimidazoles, OPBI and CF3PBI, of high molecular weights in very short reaction times. The synthesized polybenzimidazoles exhibited high thermostability and excellent mechanical properties. The influence of the reaction conditions on the polymer structure and molecular weights was studied. The "microwave" effect was demonstrated by comparison of the polycondensations conducted under microwave irradiation and conventional heating.
引用
收藏
页码：699 / 709
页数：11
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