INCORPORATION OF ZEOLITES IN POLYIMIDE MEMBRANES

The incorporation of zeolites in PI (polyimide) is investigated, aimin g at higher fluxes and selectivities in membrane applications. Remarka ble differences are found in comparison with the earlier reported inco rporation of zeolites in PDMS (poly(dimethylsiloxane)): the adhesion b etween the PI and the zeolite is bad, resulting in weak membranes. The sorption of xylenes in the membrane is used to study the impact of so rption and diffusion in potential membrane applications. The preparati on method used induces anisotropy in the membrane.