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Asymmetric transmembrane transfer caused by a difference in adsorption characteristics at interfaces

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Abstract

A surface adsorption mechanism is proposed for the effect of asymmetric diffusion permeability of a modified membrane. A model is developed to describe diffusion transfer through the modified membrane with regard to the finiteness of the rate of adsorption on external membrane surfaces. Expressions are derived for diffusion fluxes as functions of transfer direction, and asymmetry coefficient is calculated for the diffusion permeability of the membrane. It is shown that the difference in the kinetic properties of the external surfaces of the membrane, which results from the modification of one of the surfaces, may induce the effect of asymmetric diffusion permeability.

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Authors and Affiliations

  1. Chair of Economical and Mathematical Simulation and Models, Finance university under the Government of Russia, Moscow, Russia

    V. V. Ugrozov

  2. Financial and Economic Institute, ul. Oleko Dundicha 23, Moscow, 123995, Russia

    V. V. Ugrozov

  3. Gubkin Russian State University of Oil and Gas, Leninskii pr. 65, korp.1, Moscow, 119991, Russia

    A. N. Filippov

Authors
  1. V. V. Ugrozov
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  2. A. N. Filippov
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Original Russian Text © V.V. Ugrozov, A.N. Filippov, 2012, published in Kolloidnyi Zhurnal, 2012, Vol. 74, No. 6, pp. 777–780.

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Ugrozov, V.V., Filippov, A.N. Asymmetric transmembrane transfer caused by a difference in adsorption characteristics at interfaces. Colloid J 74, 739–742 (2012). https://doi.org/10.1134/S1061933X12060166

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  • DOI: https://doi.org/10.1134/S1061933X12060166

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