Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (3): 586.

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Synthesis and Characterization of a Novel Sulfonated Polyimide Used as Proton Exchange Membrane

DOU Zhi-Yu, LIU Chen-Guang, LI Xian-Feng, ZHAO Cheng-Ji, ZHONG Shuang-Ling, NA Hui*   

  1. Alan G. MacDiarmid Institiute, College of Chemistry, Jilin University, Changchun 130021, China
  • Received:2005-02-21 Online:2006-03-10 Published:2006-03-10
  • Contact: NA Hui,E-mail: huina@jlu.edu.cn

Abstract:

A series of sulfonated polyimides were synthesized by condensation of bis(p-hydroxylphenyl)-1,4,5,8-naphthalenetetracarboxylic di\|imide(NTDA) with various molar ratios of 3,3′-disulfonate-4,4′-dichlorodiphenylsulfone to 4,4′-dichlorodiphenyl\|sulfone. Both the monomers and the polymers were characterized by FTIR and 1H NMR. All the synthesized polymers have intrinsic viscosities above 0.70, which implies that the polymers have a high molecular weight. The DSC and TGA analysis of the polymers show that all of the polymers have good thermal stabilities. The polymers also  have a good solubility, and could be cast into tough membranes. Some properties of the polymer membranes were also studied.

Key words: Sulfonation; Polyimide; NTDA; Fuel Cell; Proton exchange membrane

CLC Number: 

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