Blended membranes of hydrophilic polymers poly (vinyl alcohol) (PVA) and poly(vinyl amine) (PVAm) were prepared and crosslinked with glutaraldehyde. The characterization of membranes were done by using FTIR, XRD, DSC, SEM and swelling study. MB1.5 membrane was the best one in all since it exhibited higher separation index. By using blend membrane (MB1.5), the flux through a 65-mm film increased from 0.01 to 0.47 kg/m2h at an acetonitrile/water feed ratio between 20/80 and 5/95 w/w at 30°C while separation factor increased from the 5055 to 100.84 attributed to the higher hydrophilicity of blend membranes. On comparison of pervaporation data with water-acetonitrile vapor-liquid equilibrium data it was observed that the membrane acted as third phase to effectively break the azeotropes.

• Shivshankar Chaudhari(Department of Industrial Chemistry, Pukyong National University)
• YongSung Kwon(Department of Industrial Chemistry, Pukyong National University)
• ChiYoung Park(Department of Industrial Chemistry, Pukyong National University)
• MyungJun Moon(Department of Industrial Chemistry, Pukyong National University)
• MinYoung Shon(Department of Industrial Chemistry, Pukyong National University)
• SeungEun Nam(Center for membranes, Korea Research Institute of Chemical Technology)
• YouIn Park(Center for membranes, Korea Research Institute of Chemical Technology)