▎ 摘　　要

NOVELTY - The polydopamine based functional graphene hybrid composite film has a separation layer that is provided with a dense separation layer and a porous support layer. The separation layer is provided with a polyamide block copolymer as matrix. The polydopamine graphene nanosheet is provided with a filling agent. The mass ratio of filling agent and graphene is 2-8%. The thickness of the separation layer is about 6 microns. The support layer is provided with a polysulfone ultrafiltration membrane with cut-off molecular weight of 20kDa. USE - Polydopamine based functional graphene hybrid composite film. ADVANTAGE - The composite film preparation process is performed easily so that the high separation performance and anti-swelling property of film are improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of polydopamine based functional graphene hybrid composite film. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the polydopamine based functional graphene hybrid composite film.