▎ 摘　　要

NOVELTY - Preparing graphene oxide-polyvinyl alcohol substrate pervaporation membrane comprises (i) mixing oxidized graphene dispersion with polyvinyl alcohol solution uniformly to obtain the graphene oxide-polyvinyl alcohol dispersion, removing impurity from GO-PVA dispersion, and defoaming to obtain the casting solution, and (ii) immersing base film in the crosslinking agent solution and drying to obtain pre-base film, coating the casting solution on the pre-processed base film, and drying at room temperature to obtain the membrane. USE - The membrane is useful for separation of small amount of water in high concentration organic matter by pervaporation. ADVANTAGE - The membrane has good supporting performance and physicochemical properties, so that it has good separating property.