Recent Progress in Mixed-Matrix Membranes

ALEXIS M. W. HILLOCK, SHABBIR HUSAIN, and WILLIAM J. KOROS 

School of Chemical Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332 

To be useful for separation or purification processes, membranes must exhibit a number of characteristics such as high flux, high selectivity, mechanical stability, resistance to fouling, and low cost. 

The membranes most commonly used in membrane separation processes are polymeric and nonporous. The separation is based on a solution-diffusion mechanism. This mechanism involves molecular-scale interactions of the permeating molecule with the membrane polymer. The mechanism assumes that each molecule is sorbed by the membrane at one interface, transported by diffusion across the membrane through the voids between 

Advanced Membrane Technology and Applications. W. S. Winston Ho, and T. Matsuura Copyright 2008 John Wiley Sons, Inc. 

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