Synthesis and characterization of novel hyperbranched polybenzimidazoles based on an AB2 monomer containing four amino groups and one carboxylic group

被引：19

作者：

Li, Z. X.

Liu, J. H.

Yang, S. Y.

Huang, S. H.

Lu, J. D.

Pu, J. L. ^{[1
]}

机构：

[1] Beijing Inst Graphic Commun, Lab Printing & Packaging Mat & Technol, Beijing 102600, Peoples R China

[2] Huazhong Univ Sci & Technol, Coll Energy & Power Engn, Wuhan 430074, Peoples R China

[3] Chinese Acad Sci, Ctr Mol Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100080, Peoples R China

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2006年 / 44卷 / 19期

关键词：

AB(2) monomer; hyperbranched; modification; polybenzimidazoles; thermal properties;

D O I：

10.1002/pola.21668

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new kind of AB(2) monomer, 4-[2,6-bis(3,4-diaminophenyl)pyridin-4-yl]benzoic acid, was synthesized, and several hyperbranched polybenzimidazoles (HPBIs) were prepared through self-polymerization followed by modification reactions with end-capping reagents such as 4-methyl benzoic acid and 3-[3,5-bis(trifluoromethyl)phenoxy] benzoic acid. The HPBIs had good solubility in strongly aprotic solvents, such as N-methyl-2-pyrrolidone, N,N'-dimethylformamide, N,N'-dimethylacetamide, and dimethyl sulfoxide. They also exhibited excellent thermal properties, with glass-transition temperatures of 318-381 degrees C and 10% weight loss in the range of 338-674 degrees C in nitrogen and 329-509 degrees C in air. (c) 2006 Wiley Periodicals, Inc.

引用

页码：5729 / 5739

页数：11

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