Synthesis and properties of polyimides from isomeric bis(dicarboxylphenylthio)diphenyl sulfone dianhydrides

被引：40

作者：

Yan, JL ^{[1
]}

Wang, Z ^{[1
]}

Gao, LX ^{[1
]}

Ding, MX ^{[1
]}

机构：

[1] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

来源：

POLYMER | 2005年 / 46卷 / 18期

基金：

中国国家自然科学基金;

关键词：

PTPSDA; isomeric polyimides; structure-property relations;

D O I：

10.1016/j.polymer.2005.05.157

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

4,4'-Bis(3,4-dicarboxyphenylthio)diphenyl sulfone dianhydride(4,4'-PTPSDA) and 4,4'-bis(2,3-dicarboxyphenylthio)diphenyl sulfone dianhydride(3,3'-PTPSDA) were synthesized from chlorophthalic anhydrides and bis(4-mercaptophenyl)sulfone. Their structures were determined via IR spectra, H-1 NMR and elemental analysis. A series of polyimides were prepared from isomeric PTPSDAs and aromatic diamines in 1-methyl-2-pyrrolidinone (NMP) via the conventional two-step method. Polyimides based on 4,4'-PTPSDA and 3.3'-PTPSDA have good solubility in polar aprotic solvents and phenols. The 5% weight-loss temperatures of isomeric polyimides were near 500 degrees C in N-2. DMTA and DSC analyses indicated that the glass-transition temperatures of polyimides front 3,3'-PTPSDA are higher than those of polyimides from 4,4'-PTPSDA. The wide-angle X-ray diffraction showed that all polyimides are amorphous. The polyimides from 3,3'PTPSDA showed higher permeability but lower permselectivity compared with those from 4.4'-PTPSDA. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：7678 / 7683

页数：6

共 33 条

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