Preparation and Characterization of Interfacial Properties of PVA/EC Alloy Membrane Material
PVA/EC合金膜材料的制备及其界面性能表征

The polyvinyl alcohol/ethyl cellulose (PVA/EC) alloy was prepared by means of solution blending and liquid-solid phase inversion method. The HPLC method with PVA/EC alloy and EC as the column packing was employed to measure the retention values and equilibrium distribution coefficient of both inorganic solutes and organic solutes. The interfacial parameters and hydrophilicity were estimated from HPLC data, and the compatibility of alloy was also studied by means of viscometry, refractive index and IR. The experimental results show that PVA and EC have a good compatibility in PVA/EC alloy, and the alloy is superior to EC in separation efficiency for non-dissociable polar organic solutes.