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Liquid Membrane Phenomena : Characterization Of Liquid Membranes Generated By Lecithin-cholesterol Mixture

A. K. Jain, R. Srivastava
Published 1991 · Chemistry

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Abstract The transport behavior of liquid membranes generated by lecithin—cholesterol mixture at the sintered glass membrane—water interface has been studied. Data on hydraulic permeability, electroosmotic velocity, streaming potential, and streaming current have been used to calculate the transport coefficients ( R ik ) accounting for liquid membranes, using the theory developed by Kedem and Katachalsky for composite series membranes. The trends observed in degree of coupling corresponding to liquid membranes demonstrate that the liquid membranes formed at the interface are stabilized when lecithin and cholesterol attain definite composition in the aqueous dispersion. Also, these trends are indicative of the applicability of liquid membranes as a model system for biological membranes. The efficiencies of electrokinetic energy conversion for both electroosmosis and streaming potential have been evaluated and the results thus obtained have been shown to be consistent with the steady state thermodynamic theories.
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