Abstract
The electrokinetic properties of commercial acetylcellulose microfiltration membranes are compared to a model system, i.e., an acetylcellulose film applied to a plane-parallel capillary made of quartz glass. It is shown that the absolute magnitudes of the electrokinetic potentials of the model system are higher than those of the examined microfilters, seemingly because the latter are modified to increase their mechanical strength and elasticity. The dissociation constants of carboxyl groups and the adsorption potentials of potential-determining ions are found from the electrokinetic data on the model system.
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