Separation of Ethanol-Water Mixture by Pervaporation through the Blend Membrane of Poly Arcylate with PVA

The copolymers of acrylic acid and 2-(dimethylamino)ethyl methacrylate were synthesized and blended with poly vinyalcohol (PVA) for pervaporation membranes,which were crosslinked by heat and used for separating ethanol-water mixture.The results show that water is preferential solution and permselectivity in the membranes,compared with the PVA membrane,the separation factor decreases while the total flux notably inxreases,especially the flux of separating 95% (percent of weight of ethanol ) ethanol-water mixture is still greater.At appropriate ratio of monomers and content of poly arcylate,the membrane has good property.