Functional composites based on polybenzimidazole and graphite nanoplates

• Published in: Russian journal of applied chemistry 2016-05, Vol.89 (5), p.780-786
• Main Authors: Kholkhoev, B. Ch, Gorenskaya, E. N., Bal’zhinov, S. A., Farion, I. A., Batorova, G. N., Nomoev, A. V., Timashev, P. S., Radnaev, B. R., Chailakhyan, R. K., Fedorov, V. E., Burdukovskii, V. F.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Industrial Chemistry/Chemical Engineering; Macromolecular Compounds and Polymeric Materials
• ISSN: 1070-4272; 1608-3296
• DOI: 10.1134/S1070427216050153

A procedure was developed for preparing stable dispersions of graphite nanoplates with the concentration of up to 25 mg mL –1 by two-step ultrasonic treatment of graphite in N -methyl-2-pyrrolidone. A series of elastic films based on poly-2,2′- p -oxydiphenylene-5,5′-bisdibenzimidazole oxide with the filler content of up to 45 wt % were prepared from such dispersions. Introduction of the nanoadditive into the matrix of the heterocyclic polymer results in 47% enhancement of the tensile strength of the materials and in an increase in the temperature of the 10% weight loss by 52–81°C. In addition, the films are characterized by high electrical conductivity reaching 480 S cm –1 for the composite with 45 wt % graphite nanoplates and exhibit tensoresistive properties, which allows using them in various electrotechnical devices and fabric engineering structures.