SULFONATED POLYIMIDES CONTAINING PYRIDINE GROUPS AS PROTON EXCHANGE MEMBRANE MATERIALS

Rui Lei; Chuan-qing Kang; Yun-jie Huang; Xue-peng Qiu; Xiang-ling Ji; Wei Xing; Lian-xun Gao

doi:10.1007/s10118-011-1063-5

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SULFONATED POLYIMIDES CONTAINING PYRIDINE GROUPS AS PROTON EXCHANGE MEMBRANE MATERIALS

PAPER | Updated：2021-06-21

- SULFONATED POLYIMIDES CONTAINING PYRIDINE GROUPS AS PROTON EXCHANGE MEMBRANE MATERIALS
- Chinese Journal of Polymer Science Vol. 29, Issue 5, Pages: 532-539(2011)
- Affiliations：
  
  a.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b.Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  **Lian-xun Gao (高连勋), E-mail: lxgao@ciac.jl.cn
- Funds：
- DOI：10.1007/s10118-011-1063-5
  CLC：
- Received：27 August 2010，
  
  Revised：2010-09-23，
  
  Accepted：08 October 2010，
  
  Published：2011
- Accepted：
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Rui Lei, Chuan-qing Kang, Yun-jie Huang, et al. SULFONATED POLYIMIDES CONTAINING PYRIDINE GROUPS AS PROTON EXCHANGE MEMBRANE MATERIALS[J]. Chinese Journal of Polymer Science, 2011, 29(5): 532-539.
DOI：

Rui Lei, Chuan-qing Kang, Yun-jie Huang, et al. SULFONATED POLYIMIDES CONTAINING PYRIDINE GROUPS AS PROTON EXCHANGE MEMBRANE MATERIALS[J]. Chinese Journal of Polymer Science, 2011, 29(5): 532-539. DOI： 10.1007/s10118-011-1063-5.

摘要

Abstract

A series of sulfonated polyimides (SPIs) containing pyridine groups were prepared by direct polycondensation from 1

8-naphthalenetetracarboxylic dianhydride (NTDA)

4'-diaminodiphenyl ether-2

2'-disulfonic acid (ODADS) and 4-(4-methoxy)phenyl-2

6-bis(4-aminophenyl)pyridine (DAM). The resulting copolymers displayed good solubility in common organic solvents. Flexible

transparent

tough membranes were obtained

via

solution casting. All the films showed high thermal stability with desulfonation temperature over 300℃. They exhibited prominent mechanical properties with Young’s modulus around 2.0 GPa. High proton conductivity (0.23 S/cm at 100% RH) was also observed. More importantly

the new materials exhibited low water uptake (30 wt%-75 wt% at 80℃) and improved water stability

which were attributed to the acid-base interaction between sulfonic acid and pyridine functional groups.

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