Synthesis of hyperbranched polybenzimidazoles and their membrane formation

被引：58

作者：

Xu, Hongjie ^{[1
]}

Chen, Kangcheng ^{[1
]}

Guo, Xiaoxia ^{[1
]}

Fang, Jianhua ^{[1
]}

Yin, Jie ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MEMBRANE SCIENCE | 2007年 / 288卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

hyperbranched polybenzimidazole; synthesis; membrane; proton conductivity;

D O I：

10.1016/j.memsci.2006.11.022

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

DA series of amine-terminated hyperbranched polybenzimidazoles (HBPBIs) were successfully synthesized by condensation polymerization of aromatic dicarboxylic acids and an in situ synthesized aromatic hexamine intermediate product from 1,3,5-benzenetricarboxylic acid (BTA) and 3,3'-diaminobenzidine (DAB) in polyphosphoric acid (PPA) at 190 degrees C for 20 h. HBPBI membranes were fabricated by solution cast method in the presence of cross-linkers (ethylene glycol diglycidyl ether (EGDE) and terephthaldehyde (TPA)). The resulting HBPBI membranes displayed good mechanical properties and good thermal stability. High proton conductivity was obtained with the phosphoric acid-doped and TPA-cross-linked HBPBI membranes at 0% relative humidity. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：255 / 260

页数：6

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