METHOD OF PRODUCING COMPOSITE ANION-EXCHANGE MEMBRANE Russian patent published in 2017 - IPC B01D71/60 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing anion-exchange membranes with improved electrotransport characteristics used in the electrodialysis apparatus for processing of various technological solutions. The method of producing an anion-exchange membrane comprises placing of the anion-exchange membrane with positively charged fixed groups in a two-compartment cell formed by vertically fixed membrane, one of its chambers is filled with water, the other one is filled consecutively with (NH₄)₂S₂O₈ ammonium persulfate solution, then with 1 M aniline solution prepared at 1 M HCl, characterized by using 0.5 M (NH₄)₂S₂O₈ ammonium persulfate made with 1 M HCl solution, and the membrane is being reacted by the resulting ammonium persulfate solution for 10-30 minutes, then the aniline solution is used for 10-30 minutes, wherein the positively charged fixed groups of anion-exchange membrane are nitrogen-containing.

EFFECT: invention reduces the time of producing anion-exchange composite membrane with a layer of polyaniline showing high conductivity.

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