title: [Mechanical pressure dependencies of the concentration boundary layers for polymeric membrane].
abstract: On a basis of the Kedem-Katchalsky formalism, the mathematical model enabling the calculation of mechanical pressure estimation characteristic of the concentration boundary layers thicknesses (delta) in a single-membrane system containing binary solutions was obtained. This model contains transport membrane, solution parameters and volume osmotic flux. These values were determined in a series of independent experiments. Calculated values delta are nonlinearly dependent on mechanical pressure difference for the same concentration of investigated solutions and membrane system configuration. These nonlinearities are an effect of a competition between spontaneously occurring diffusion, convection processes and modification of concentration field by mechanical pressure.
authors.affiliation: Katedra Zdrowia Publicznego, Politechnika Czestochowska.
authors.forename: Jolanta
authors.initials: J
authors.lastname: Jasik-Slezak
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Zyska
authors.forename: Andrzej
authors.initials: A
authors.lastname: Slezak
mesh_terms: D004058:Diffusion; D008567:Membranes, Artificial; D008956:Models, Chemical; D017711:Nonlinear Dynamics; D009995:Osmosis; D012996:Solutions / Q000737:chemistry*
chemical_list: D008567:Membranes, Artificial; D012996:Solutions