Slezak Izabella H, Jasik-Slezak Jolanta, Rogal Mirosława, Slezak Andrzej
Zakład Biologii i Biofizyki Politechniki Czestochowskiej.
Polim Med. 2006;36(2):49-56.
On the basis of model equation depending the membrane potential deltapsis, on mechanical pressure difference (deltaP), concentration polarization coefficient (zetas), concentration Rayleigh number (RC) and ratio concentration of solutions separated by membrane (Ch/Cl), the characteristics deltapsis = f(deltaP)zetas,RC,Ch/Cl for steady values of zetas, RC and Ch/Cl in single-membrane system were calculated. In this system neutral and isotropic polymeric membrane oriented in horizontal plane, the non-homogeneous binary electrolytic solutions of various concentrations were separated. Nonhomogeneity of solutions is results from creations of the concentration boundary layers on both sides of the membrane. Calculations were made for the case where on a one side of the membrane aqueous solution of NaCl at steady concentration 10(-3) mol x l(-1) (Cl) was placed and on the other aqueous solutions of NaCl at concentrations from 10(-3) mol x l(-1) to 2 x 10(-2) mol x l(-1) (Ch). Their densities were greater than NaCl solution's at 10(-3) mol x l(-1). It was shown that membrane potential depends on hydrodynamic state of a complex concentration boundary layer-membrane-concentration boundary layer, what is controlled by deltaP, Ch/Cl, RC and zetas.
基于依赖膜电位Δψ、机械压差（ΔP）、浓差极化系数（ζ）、浓度瑞利数（RC）以及被膜分隔的溶液浓度比（Ch/Cl）的模型方程，计算了单膜系统中ζ、RC和Ch/Cl稳定值下的特性Δψ = f(ΔP)ζ,RC,Ch/Cl。在该系统中，中性且各向同性的聚合物膜在水平面内定向，分离了不同浓度的非均相二元电解质溶液。溶液的非均相性是由于在膜两侧形成了浓度边界层。计算针对以下情况进行：在膜的一侧放置稳定浓度为10⁻³ mol·L⁻¹（Cl）的NaCl水溶液，在另一侧放置浓度从10⁻³ mol·L⁻¹到2×10⁻² mol·L⁻¹（Ch）的NaCl水溶液。它们的密度大于10⁻³ mol·L⁻¹的NaCl溶液的密度。结果表明，膜电位取决于复杂的浓度边界层 - 膜 - 浓度边界层的流体动力学状态，这由ΔP、Ch/Cl、RC和ζ控制。
