The charged mosaic polymer membrane (CMM) without reinforcement and the composite charged mosaic polymer membrane (CCMM) with reinforcement were investigated in terms of salt and water transport (permeability). The composite charged mosaic polymer membrane (CCMM) with reinforcement showed a unique transport behavior such as preferential material transport L-p and omega. Water permeability coefficient, L-p and salt permeability coefficient, omega were estimated by taking account of active layer thickness of composite polymer gel. The L-p and omega values of CCMM with reinforcement were larger than those of CMM without reinforcement. On the other hand, the reflection coefficient of CCMM, sigma, showed negative value, which suggested preferential material transport to solvent transport. (c) 2008 Wiley Periodicals, Inc.