An Alternative Approach to the Synthesis of Poly(naphthoylenebenzimidazole)s

Abstract

An alternative approach to the synthesis of poly(naphthoylenebenzimidazole)s in supercritical carbon dioxide has been accomplished without use of hazardous chemical solvents, which resulted in preparation of high-purity polymers by a more efficient contemporary method. A series of poly(naphthoylenebenzimidazole) s has been obtained at 90°C and 15 MPa for 8 h with the use of a mixture of benzoic acid and benzimidazole as a catalyst. Certain properties of the synthesized polymers have been studied.