FIELD: chemistry.
SUBSTANCE: invention relates to chemical industry and nanotechnology. Crystalline graphite is treated with solution of ammonium persulfate in sulfuric acid, which does not contain free water. Resulting intercalated graphite compound is maintained until its expansion. Then they are hydrolyzed, washed with water and dispersed by ultrasound in an aqueous solution of surfactants, which use a mixture of oligomeric compounds containing cumulative double carbon-carbon bonds and amino groups, as well as hydroxyl groups-aminocumulene, at a mass ratio of aminocumulene: graphene of 0.25:1 to 4:1.
EFFECT: invention allows to increase efficiency of exfoliation, to increase the allowable working concentration of graphene when it is dispersed.
1 cl, 2 dwg, 3 ex
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