Resumen

YANHUA, LU; JIANMIN, CHEN; HAIXIA, CUI  y  HUIDI, ZHOU. SYNTHESIS OF POLY (BIBENZIMIDAZOLE-P-PHENYL- BENZOBISOXAZOLE). J. Chil. Chem. Soc. [online]. 2009, vol.54, n.4, pp. 331-333. ISSN 0717-9707.  doi: 10.4067/S0717-97072009000400001.

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.

Palabras clave : Copolymer; polybenzimidazole; polybenzoxazole; thermal stability.