Electrokinetic phenomena in microporous membranes with a fixed transverse charge distribution

被引:12
作者
Aguilella, V
AguileliaArzo, M
Ramirez, P
机构
关键词
electrokinetic phenomena; microporous membranes; fixed transverse charge distribution; charge distribution;
D O I
10.1016/0376-7388(95)00050-X
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The charged capillary model for microporous membranes has been extended to account for a distribution of fixed charge transversal to the pore wall. The non-linearized Poisson-Boltzmann equation has been solved numerically and results obtained for an exponential charge distribution function have been analyzed. The expressions used for computing the streaming potential and the pore conductivity arise from Poisson-Boltzmann equation together with Nernst-Planck and Navier-Stokes equations. The effect of charge displacement on streaming potential and wall potential is significant, especially for high bulk electrolyte concentration, unlike Pore Conductivity which slightly changes with respect to the case of charge smeared at the pore wall. The model is expected to be useful for microporous membranes whose pore dimensions are very small, and also for some membrane-like biological systems. In particular, this transverse-charge model could be used in the study of electrokinetic phenomena through human Stratum Corneum, provided fixed charge density and ''pore'' dimensions are known.
引用
收藏
页码:191 / 204
页数:14
相关论文
共 25 条
[1]  
AGUILELLA V, 1994, IN PRESS J CONTROLLE, V99
[2]   LIPID-PROTEIN-PARTITIONING THEORY OF SKIN PENETRATION ENHANCEMENT [J].
BARRY, BW .
JOURNAL OF CONTROLLED RELEASE, 1991, 15 (03) :237-248
[3]   CHARACTERIZATION OF THE PERMSELECTIVE PROPERTIES OF EXCISED HUMAN-SKIN DURING IONTOPHORESIS [J].
BURNETTE, RR ;
ONGPIPATTANAKUL, B .
JOURNAL OF PHARMACEUTICAL SCIENCES, 1987, 76 (10) :765-773
[4]   ELECTROSTATIC POTENTIAL OF BILAYER LIPID-MEMBRANES WITH THE STRUCTURAL SURFACE-CHARGE SMEARED PERPENDICULAR TO THE MEMBRANE-SOLUTION INTERFACE - AN EXTENSION OF THE GOUY-CHAPMAN DIFFUSE DOUBLE-LAYER THEORY [J].
CEVC, G ;
SVETINA, S ;
ZEKS, B .
JOURNAL OF PHYSICAL CHEMISTRY, 1981, 85 (12) :1762-1767
[5]  
Cevc G, 1987, PHOSPHOLIPID BILAYER
[6]   ELECTROPHORETICAL STUDY OF CELL-SURFACE PROPERTIES - INFLUENCE OF THE SURFACE-COAT ON THE ELECTRIC-POTENTIAL DISTRIBUTION AND ON GENERAL ELECTROKINETIC PROPERTIES OF ANIMAL-CELLS [J].
DONATH, E ;
PASTUSHENKO, V .
BIOELECTROCHEMISTRY AND BIOENERGETICS, 1979, 6 (04) :543-554
[7]   IONIC MASS-TRANSPORT THROUGH A HOMOGENEOUS MEMBRANE IN THE PRESENCE OF A UNIFORM ELECTRIC-FIELD [J].
KEISTER, JC ;
KASTING, GB .
JOURNAL OF MEMBRANE SCIENCE, 1986, 29 (02) :155-167
[8]   ELECTROKINETIC PHENOMENA IN FIBROUS POROUS-MEDIA [J].
KOZAK, MW ;
DAVIS, EJ .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1986, 112 (02) :403-411
[9]   THEORY OF THE ELECTROKINETIC BEHAVIOR OF HUMAN-ERYTHROCYTES [J].
LEVINE, S ;
LEVINE, M ;
SHARP, KA ;
BROOKS, DE .
BIOPHYSICAL JOURNAL, 1983, 42 (02) :127-135
[10]   THEORY OF ELECTROKINETIC FLOW IN FINE CYLINDRICAL CAPILLARIES AT HIGH ZETA-POTENTIALS [J].
LEVINE, S ;
MARRIOTT, JR ;
NEALE, G ;
EPSTEIN, N .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1975, 52 (01) :136-149