State of the Art of Poly (vinyl alcohol )Membrane for Pervaporation

The preparation of different types of poly(vinyl alcohol)(PVA) membrane and various techniques of PVA membrane modification were described.Pervaporation(PV) performances of PVA membrane for separating organic/water and organic/organic mixtures were given.The effects of the cross-linking agent,the specifications of support membrane,the polymer network structure as well as blending PVA membrane and carriers in fixed-site carrier PVA membrane on PV separation performances were emphatically discussed.Three development trends on PVA membrane and its application in the future are proposed on the basis of the research.