How a membrane works
Semi-permeable membranes - General

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How a membrane works


Semi-permeable membranes - General

Author : Rémy AUDINOS

Publication date: September 10, 1999 | Lire en français

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2. How a membrane works

An artificial membrane with selective permeability is a material barrier which, under the action of an acting force, allows substances to be selectively stopped or passed between the two volumes it separates . The permeability of the membrane, characterized by the transmembrane flux, is directly related to the intensity of this force.

Depending on whether the force consciously applied is due to a pressure gradient, an electrical potential gradient or a chemical potential gradient, often...

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