Pervaportion separation of ethanol-water mixtures through phosphatic poly (vinyl alcohol) membranes

摘要

Phosphatic ply (vinyl alcohol) membranes were prepared and used in the pervaporation separation of ethanol-water mixtures. Experiment results showed that phosphatic poly (vinyl alcohol) membranes were of very good water permselectivity for the mixture with the ethanol mass fraction of 20～95/100, and esterification degree of phosphatic poly(vinyl alcohol) affected membrane separation properties, remarkably.