Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (05): 1106.doi: 10.3969/j.issn.0251-0790.2012.05.044

• Polymer Chemistry • Previous Articles     Next Articles

Synthesis and Characterization of Sulfonated Polyamides

ZHAO Jing, XU Hong-Jie, FANG Jian-Hua, YIN Jie   

  1. State Key Laboratory of Metal Matrix Composites, School of Chemistry & Chemical Technology, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2011-06-30 Online:2012-05-10 Published:2012-05-10

Abstract: Two kinds of sulfonated monomers were synthesized, i.e., 1,4-bis(4-carboxyphenoxy)benzene-2-sulfonate(BCPOBS-Na) and 4,4'-diaminodiphenyl ether-2,2'-disulfonic acid(ODADS). Then non-sulfonated monomer was reacted with sulfonated monemoer, respectively, via the Yamazaki-Higashi phosphorylation method in the presence of triphenylphosphite(TPP), pyridine(Py) and halide salts to give high molecular sulfonated aromatic polyamides(SPA-1 and SPA-2). The polymers were obtained in quantitative yields with inherent viscosities between 0.6 and 0.8 dL/g. The structures and properties of obtained solfonated polyamides were confirmed by FTIR, 1H NMR and TGA. The results show good solubility in polar solvents, high thermal stability, good film forming ability and excellent mechanical properties.

Key words: Sulfonated aromatic polyamide(SPA), Phosphorylation reaction, Yamazaki direct polycondensation, Solubility, Heat resistance

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