[Role of concentration boundary layers in creation of the elecricall amplification properties of cell containing two polymeric membranes and ternary electrolyte solutions].
The aim of this work was to investigate the effect of concentration boundary layers upon electrical properties of a 2-membrane diffusive cell, consisting of two 1-memrane systems connected parallel, in which the membranes were fixed in horizontal planes and containing ternary electrolyte solutions. Besides, the amplification of the voltage effect of concentration boundary layers was studied. The research material consisted of flat, symmetrical and porous membrane of regenated cellulose applied in the coil hemodialyzer and sodium chloride in aqueous ethanol solution or ethanol in aqueous sodium chloride solution. The studing of membrane electric voltages psi(o) and psi(s) were carried out in the series of two isothermal stages. In the first atage was established the psi(o)(t) characteristic in the conditions in which membranes M1 i Mr were fixed vertically. In the second stage the psi(o)(t) characteristic was established in the situation in which M1 and Mr membranes were fixed horizontally. In all stages the monitoring of membrane electrical voltages was carried out until the stationary state was achieved. The obtained results shows, that Psis = psi(s)-psi(o) is the non-linear function of concentrations (Cms/Co) of the solutions being in the ranges both central (Cm,) and external (Co) in a double-membrane diffusive cell. It has been stated that this cell has the properties of amplification the voltage effect of the concentration boundary layers. The measure of these properties is an adequate amplification coefficient. The value of this effect depends on the composition and the concentration of the solutions and the configuration of double-membrane diffusive cell.
Werner
Hanna
H
Katedra Biomedycznych Podstaw Kultury Fizycznej, Politechnika Czestochowska.
Slezak
Andrzej
A
D002462:Cell Membrane / Q000378:metabolism; D002482:Cellulose / Q000737:chemistry*; D004058:Diffusion; D004563:Electrochemistry; D004573:Electrolytes / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry; D008567:Membranes, Artificial; D008954:Models, Biological; D012965:Sodium Chloride / Q000737:chemistry
D004573:Electrolytes; D008567:Membranes, Artificial; D000431:Ethanol; D012965:Sodium Chloride; D002482:Cellulose