FIELD: membrane technology.
SUBSTANCE: method of producing a composite cation-exchange membrane, comprising placing a homogeneous perfluorinated membrane in a solution of an equivalent mixture of aniline with sulfuric acid to saturate the cation-exchange membrane with aniline, and then to a solution of an iron (III) chloride oxidant in sulfuric acid, characterized by that an equivalent solution of aniline and sulfuric acid is prepared with concentration of 0.01–0.001 M and the membrane is held for 30 minutes, then it is placed in solution of iron (III) chloride oxidising agent in sulfuric acid with concentration of 0.005 M for 30 minutes, after that membrane is washed with distilled water and placed into solution of sulfuric acid with concentration of 0.5 M.
EFFECT: method of producing composite cation-exchange membranes.
1 cl, 4 dwg, 1 tbl
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