Abstract
Abstract Studies on hydrodynamic and electroosmotic permeation of water, aqueous solutions of d-glucose and urea in the concentration range 10−4 to 10−3 mol dm−3 across progesterone plug membrane have been carried out to characterize the electrical nature of interface. Phenomenological coefficients have been evaluated from the linear and nonlinear equations obtained. Membrane properties viz., pore radius and zeta potentials have been determined using these coefficients. The nonlinear variation of electroosmotic flow in case of aqueous solutions of urea has been explained on the basis of electrical double layer theory and the structural modifications that are likely to occur at membrane–solution interface because of solute–solvent, solvent–solvent, and membrane–permeant interactions.
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