DETERMINATION OF OPTIMAL CONDITIONS FOR THE SYNTHESIS PROCESS OF POLYBENZIMIDAZOLNAPHTHOYLENE BENZIMIDAZOLE (PBNBI)

Abstract

   The main goal of the research was the synthesis of polyheteroarylenes through the interaction reactions of heterocyclic compounds containing benzimidazole, naphthoylenebenzimidazole, and imide rings in the macromolecular chain, based on monomers capable of forming various polymer fragments through cyclopolycondensation reactions.

Another goal of the research work is the synthesis of monomers containing heterocycles through polycondensation and migration copolymerization reactions.

Considering that the synthesis methods described in the literature were carried out using expensive, difficult-to-obtain, and toxic compounds (such as bis-o-phenylenediamines), it is understandable how important it is to find new ways to synthesize polybenzimidazoles (PBIs) by the oxidative cyclodehydration reaction of polyamides synthesized from mono- and dicarboxylic acids and imidoyl chlorides of aromatic diamines.

The development of simple and technological methods for the synthesis of thermoplastic polymers containing active reaction centers and capable of forming cross-linked three-dimensional structures during processing is also considered very important.