▎ 摘　　要

NOVELTY - A cationic polymerization process for synthesis of nano-structured polymers containing graphene involves reacting graphite oxide dispersed in a solvent by ultrasounds, with at least one vinyl monomer and at least one vinyl aromatic monomer, in presence of at least one strong inorganic acid for activating cationic polymerization, where graphite oxide contains 5-60 wt.% of bound oxygen, vinyl monomer contains at least one carboxylic group, and ratio between oxygen bound to oxide and carboxylic groups is 1:10 to 10:1 in moles per mole. USE - As cationic polymerization process for synthesis of nano-structured polymers containing graphene (claimed). ADVANTAGE - The process is effective and economical for synthesis of nano-structured polymers, based on graphene, which allows vinyl aromatic polymer to be chemically bound to graphite oxide so as to obtain dispersion on a nanometric level. Unlike other known processes, the process allows the complete exfoliation of graphite into graphene sheets which do not form agglomerates. The complete exfoliation and absence of agglomerates allows nano-composites containing graphene to be obtained, uniformly distributed with the lowest consumption of starting materials and without onerous separation phases of the residual agglomerates. DETAILED DESCRIPTION - A cationic polymerization process for synthesis of nano-structured polymers containing graphene involves reacting graphite oxide dispersed in a solvent by ultrasounds, with at least one vinyl monomer and at least one vinyl aromatic monomer, in the presence of at least one strong inorganic acid suitable for activating a cationic polymerization, where the graphite oxide contains 5-60 wt.% of bound oxygen, vinyl monomer contains at least one carboxylic group, the ratio between oxygen bound to the oxide and carboxylic groups is 1:10 to 10:1 in moles per mole, and the ratio between the vinyl aromatic monomer and the sum of the quantity of graphite oxide and vinyl monomer containing carboxylic groups is 50-99 wt.%.