title: [A pressure gravity-diffusive effect for flat polymeric membrane and ternary non-electrolyte solutions].
abstract: In this paper the pressure gravidiffusive model equation in a single-membrane osmotic-diffusive cell is elaborated. In this cell the flat, microporous and symmetric polymeric membrane so-called Nephrophane positioned horizontally separated water and binary (aqueous glucose or aqueous ethanol) or ternary (glucose in 0.2 mol.l-1 aqueous ethanol or ethanol in 0.05 mol.l-1 aqueous glucose) non-electrolyte solutions. The calculations of pressure gravidiffusive effects for the configurations A and B of the single-membrane osmotic-diffusive cell were elaborated. In configuration A solution was placed in compartment below membrane and in configuration B--above membrane. The calculated result are interpreted in terms of the convective instability that increases the diffusive permeability coefficient of complex: concentration boundary layer/membrane/concentration boundary layer.
authors.affiliation: Wydział Zarzadzania, Politechnika Czestochowska.
authors.forename: A
authors.initials: A
authors.lastname: Slezak
authors.forename: J
authors.initials: J
authors.lastname: Wasik
authors.forename: J
authors.initials: J
authors.lastname: Jasik-Slezak
authors.forename: I
authors.initials: I
authors.lastname: Skrzekowska-Baran
mesh_terms: D002462:Cell Membrane / Q000378:metabolism; D004058:Diffusion; D005950:Glucose Solution, Hypertonic / Q000737:chemistry; D006112:Gravitation; D008567:Membranes, Artificial; D008954:Models, Biological; D009995:Osmosis; D010539:Permeability; D011108:Polymers; D011312:Pressure; D012996:Solutions / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D005950:Glucose Solution, Hypertonic; D008567:Membranes, Artificial; D011108:Polymers; D012996:Solutions; D014867:Water