화학공학소재연구정보센터
Journal of Membrane Science, Vol.117, No.1-2, 303-309, 1996
Methanol Removal from Organic Mixtures by Pervaporation Using Polypyrrole Membranes
Conducting polymer composite membranes with a separation layer of polypyrrole doped with hexafluorophosphate (PF6-) and p-toluenesulfonate (CH3C6H4SO3-), were examined for the removal of methanol from organic solvents (toluene, IPA, MTBE and acetonitrile) by pervaporation. In all the cases, both membranes displayed preferential permeation of methanol. Selectivities and permeation rates as functions of methanol content were studied. The highest selectivity to methanol over toluene, accompanying an acceptable methanol flux, was obtained with the membrane doped by PF6-.