| 摘要 |
PURPOSE:To obtain a separation membrane having enough durability, high permeation rate, and separation coefft. for a wide range of concn. of various org. materials when mixtures of org. materials or mixtures of water and org. materials are separated by pervaporation, vapor permeation or a permeation extracting method. CONSTITUTION:This permselective membrane consists of 90-70mol% acrylonitrile monomer unit and specified copolymer monomers. The pervaporation performance of the membrane which is dense and uniform having 5-30mum thickness, measured by using an aq. soln. of 80wt.% acetic acid at 70 deg.C as a supply liquid, gives the selectivity of water satisfying (QL)>=0.5kg.mum/m<2>.hr and alpha>=10 and log alpha>=-1.77Xlog(QL)+2.77, wherein Q is the permeation rate (kg/m<2> hr), L is the film thickness (mum), and alpha is the separation coefft. |
