▎ 摘　　要

NOVELTY - Preparation of modified graphene oxide/hyperbranched polymer composite film, involves ultrasonically reacting graphene oxide powder, evenly dispersing in aqueous phase to obtain stable graphene oxide dispersion, adding diamine monomer to graphene oxide dispersion and heating with stirring to obtain amino-containing monomer modified graphene oxide, adding diene monomer to prepared mixed system, heating with stirring to obtain composite of hyperbranched polymer-modified graphene oxide and reacting tubular base membrane with diluted modified graphene oxide solution. USE - Preparation of modified graphene oxide/hyperbranched polymer composite film used for separation of methyl tert-butyl ether/methanol (claimed). ADVANTAGE - The method enables preparation of modified graphene oxide/hyperbranched polymer composite film with enhanced separation property and improved stability. DETAILED DESCRIPTION - Preparation of modified graphene oxide/hyperbranched polymer composite film, involves ultrasonically reacting graphene oxide powder, evenly dispersing in aqueous phase to obtain stable graphene oxide dispersion, adding diamine monomer to graphene oxide dispersion and heating with stirring at 30-70 degrees C for 1-120 hours at constant temperature to obtain amino-containing monomer modified graphene oxide, adding diene monomer to the prepared mixed system, heating with stirring at 30-70 degrees C for 6-240 hours to obtain composite of hyperbranched polymer-modified graphene oxide, placing the tubular base membrane after treatment in the diluted solution of modified graphene oxide and hyperbranched polymer, depositing modified graphene oxide and hyperbranched polymer on the surface of base film and drying the film in an oven at 30-70 degrees C for 48 hours.