Pervaporation membranes were fabricated by blending different amount of zeo
lite NaA or NaX with three types of poly(amidesulfonamide) (PASA). The zeol
ite-filled membranes were characterized by IR spectroscopy; SEM, sorption m
easurements, and wide-angle X-ray diffraction. By adding the proper amount
of NaA into the polymer casting solutions, the resultant zeolite-filled mem
branes exhibited improvement in both selectivity and permeability in the se
paration of 10% aqueous solutions of ethanol and propan-1-ol, as compared w
ith the zeolite free membrane. (C) 2001 John Wiley & Sons, Inc.