Polyheteroarylenes based on 2,3,7,8-tetraaminodibenzo-<Emphasis Type="Italic">p</Emphasis>-dioxin and aromatic polyfunctional carboxylic acids

Polynaphthoylene benzimidazole and polybenzimidazole were obtained via polycondensation of 2,3,7,8-tetraaminodibenzo-p-dioxin with aromatic di- and tetracarboxylic acids in polyphosphoric acid. From a solution of polynaphthoylene benzimidazole in methanesulfonic acid a heat-resistant fiber with high tensile strength was obtained. Aromatic polybenzimidazoles are promising materials for producing membranes of medium-temperature fuel cells.     

Production of Adsorption Materials from Bentonite Clay Containing an Organic Dye

Russian Journal of Applied Chemistry - Carbon-containing materials were produced from a mixture of bentonite clay and Crystal Violet dye adsorbed on the clay. X-ray diffraction analysis and IR...     

Composition,Structure, and Properties of a Composite Material Based on Polytetrafluoroethylene and Oxyfluoride Glass–Ceramic

The morphology, structure, phase composition, and properties of composite materials based on polytetrafluoroethylene and oxyfluoride glass–ceramic of the composition 18LiF–31SiO₂–19B₂O₃–24BaO–8TiO₂ were studied.     

A New Agent for Modification of the Teflon Surface

The possibility of preparing modification solutions from sodium naphthalenide wastes and their effect on Teflon adhesion were studied.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 5, 2005, pp. 867–869.Original Russian Text Copyright © 2005 by Ayurova, Maksanova, Starichenko, Shundrin, Bodoev, Mognonov.     

Thermophysical Properties of the Polymer Composite Polytetrafluoroethylene/CaF2-Oxyfluoride Glass

Russian Journal of Applied Chemistry - Polymer composites were produced by modifying polytetrafluoroethylene with oxyfluoride glass of composition...     

Thermal Oxidation Degradation of a Polymer Composite Material Based on Polytetrafluoroethylene and Oxyfluoride Glass

Russian Journal of Applied Chemistry - The thermal oxidative degradation of a polymer composite material based on polytetrafluoroethylene and oxyfluoride glass of composition...