CRITICAL COAGULATION CONCENTRATION OF CATIONS FOR NEGATIVELY CHARGED-PARTICLES WITH AN ION-PENETRABLE SURFACE-LAYER

被引:6
作者
HSU, JP
KUO, YC
机构
[1] Department of Chemical Engineering, National Taiwan University
关键词
CRITICAL COAGULATION CONCENTRATION; ASYMMETRIC ELECTROLYTES; SURFACE LAYER; CHARGED; ION-PENETRABLE; FIRED CHARGE DISTRIBUTION; NONUNIFORM; SCHULZE-HARDY RULE; ION-EXCHANGE MEMBRANE;
D O I
10.1006/jcis.1995.1388
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The critical coagulation concentration (CCC) of cations in a suspension of negatively charged colloidal particles and arbitrary a:b electrolyte is derived. Here, a particle comprises a rigid core and an ion-penetrable surface layer. The latter contains fixed charges due to either the dissociation of the functional groups it bears or the adsorption of ions in the liquid phase. We show that, if the potential in the surface layer is high, the CCC ratio of cations follows that predicted by the Schulze-Hardy rule. On the other hand, if the potential in the surface layer is low, the CCC ratio deviates appreciably from this rule, in general. On possible exception is that the fixed charges arise from the exchange of cations in the liquid phase with the protons of the functional groups in the surface layer to form a metal complex, and the subsequent dissociation of this complex. The binding of the cations with dissociated functional groups needs to be strong enough, and there are sufficiently many functional groups. (C) 1995 Academic Press, Inc
引用
收藏
页码:250 / 257
页数:8
相关论文
共 12 条
[1]   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
[2]   APPROXIMATE ANALYTICAL EXPRESSIONS FOR THE PROPERTIES OF AN ELECTRICAL DOUBLE-LAYER WITH ASYMMETRIC ELECTROLYTES [J].
HSU, JP ;
KUO, YC .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (08) :1229-1233
[3]  
HUNTER RJ, 1987, F COLLOID SCI, V1
[4]   CHARGE-DISTRIBUTION IN THE SURFACE REGION OF HUMAN ERYTHROCYTES AS ESTIMATED FROM ELECTROPHORETIC MOBILITY DATA [J].
KAWAHATA, S ;
OHSHIMA, H ;
MURAMATSU, N ;
KONDO, T .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1990, 138 (01) :182-186
[5]   THEORY OF THE ELECTROKINETIC BEHAVIOR OF HUMAN-ERYTHROCYTES [J].
LEVINE, S ;
LEVINE, M ;
SHARP, KA ;
BROOKS, DE .
BIOPHYSICAL JOURNAL, 1983, 42 (02) :127-135
[6]   CRITIQUE OF THE MECHANISM OF SUPERSELECTIVITY IN ION-EXCHANGE MEMBRANES [J].
REISS, H ;
BASSIGNANA, IC .
JOURNAL OF MEMBRANE SCIENCE, 1982, 11 (02) :219-229
[7]  
SEAMAN GV, 1975, RED BLOOD CELLS, V2, P1136
[8]   ION-TRANSPORT IN INHOMOGENEOUS ION-EXCHANGE MEMBRANES [J].
SELVEY, C ;
REISS, H .
JOURNAL OF MEMBRANE SCIENCE, 1985, 23 (01) :11-27
[9]   CALCULATION OF THE ELECTROPHORETIC MOBILITY OF A PARTICLE BEARING BOUND POLY-ELECTROLYTE USING THE NONLINEAR POISSON-BOLTZMANN EQUATION [J].
SHARP, KA ;
BROOKS, DE .
BIOPHYSICAL JOURNAL, 1985, 47 (04) :563-566
[10]   INTERACTION BETWEEN AN ION-PENETRABLE PARTICLE AND A SOLID PARTICLE .2. CRITERIA FOR HETEROCOAGULATION [J].
TAGUCHI, T ;
TERUI, H ;
OHSHIMA, H ;
KONDO, T .
COLLOID AND POLYMER SCIENCE, 1990, 268 (01) :83-87