Abstract
A comparative analysis of the electrotransport and thermochemical properties of homogeneous and heterogeneous sulfocationite membranes modified with polyaniline has been performed. The relationship between the conditions of polyaniline synthesis in the membrane matrix and their electric conductivity, electroosmotic permeability, and thermal stability was studied. The conditions of polyaniline synthesis on the surface of a heterogeneous MK-40 membrane had an insignificant effect on the amount of the introduced modifier, while the electric conductivity of the composites remained high enough. The absence of the effect of the polyaniline synthesis conditions on the electric conductivity of МK-40-based composites suggests that the heterogeneity of this membrane is a more significant factor than the polyaniline synthesis conditions. A thermogravimetric analysis of the thermochemical properties showed a significant increase in the thermal stability of the heterogeneous membrane after its modification with polyaniline. For perfluorinated membranes, the thermochemical properties changed less significantly, but the electrotransport of ions and water significantly decreased after modification.
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