Synthesis of poly (bibenzimidazole-p-phenyl- benzobisoxazole)

• LU YANHUA ^[1] ; CHEN JIANMIN ^[1] ; CUI HAIXIA ^[1] ; ZHOU HUIDI ^[1]
  1. [1] Chinese Academy of Sciences Lanzhou Institute of Chemical Physics State Key Laboratory of Solid Lubrication
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 54, Nº. 4, 2009, págs. 331-333
• Idioma: inglés
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• Resumen

  • A diacid monomer of benzobisoxazole 2, 6-di(p-phenylene-carboxylic) acid (BBODPA) was synthesized in a simple procedure, and characterized by means of FTIR, ¹H NMR and 13C NMR. The resulting BBODPA was polymerized with 3, 3'-diaminobenzidine tetrahydrochloride (DAB) to prepare poly (bibenzimidazole-p-phenyl-benzobisoxazole) (PBBIBBO) in polyphosphonc acid. The inherent viscosities values of PBBIBBO indicated that it was a kind of high molecular weight polymer. The structure of PBBIBBO was confirmed by ¹H NMR, 13C NMR and FTIR. Thermal properties and dissolubility of PBBIBBO were also investigated. These results showed that PBBIBBO exhibited good thermal stability.