SYNTHESIS OF POLY (BIBENZIMIDAZOLE-P-PHENYL- BENZOBISOXAZOLE)

LU YANHUA, CHEN JIANMIN, CUI HAIXIA, ZHOU HUIDI
2009 Journal of the Chilean Chemical Society (Print)  
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, 1 H NMR and 13 C NMR. The resulting BBODPA was polymerized with 3, 3'-diaminobenzidine tetrahydrochloride (DAB) to prepare poly (bibenzimidazolep-phenyl-benzobisoxazole) (PBBIBBO) in polyphosphoric acid. The inherent viscosities values of PBBIBBO indicated that it was a kind of high molecular weight polymer. The structure of PBBIBBO was
more » ... of PBBIBBO was confirmed by 1 H NMR, 13 C NMR and FTIR. Thermal properties and dissolubility of PBBIBBO were also investigated. These results showed that PBBIBBO exhibited good thermal stability.
doi:10.4067/s0717-97072009000400001 fatcat:xleycemaanb7xbggsxqzqsamay