Several dense membranes made of polydimethylsiloxane (PDMS), poly(ether block amide) (PEBA) and ZSM‐5‐type, zeolite‐filled PEBA were prepared by the casting method. Morphology of membranes was determined by using differential scanning calorimetry (DSC) and wide‐angle x‐ray scattering method (WAXS). The swelling and pervaporation properties of prepared membranes were investigated in the contact with water‐methyl t‐butyl ether (H2O‐MTBE), water‐butyl acetate (H2O‐BuAc), and water‐methyl acetate (H2O‐MeAc) mixtures. It was found that transport and selectivity properties depended both on the kind of a membrane and the kind of a liquid mixture. PDMS membranes showed the best pervaporation properties. Both the PEBA and zeolite‐filled PEBA membranes showed similar selectivity during pervaporation. The presence of zeolite filler in the PEBA membrane enhanced transport of both water and organic component of the separated mixture.
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Kujawski et al. (2003) studied this question.
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