DETERMINATION OF THE EFFECTIVE CHARGE NUMBERS OF COLLOIDAL SPHERES BY ELECTROPHORETIC MOBILITY MEASUREMENTS

被引：63
作者：
OKUBO, T
机构：
[1] Kyoto Univ, Kyoto, Jpn, Kyoto Univ, Kyoto, Jpn
来源：
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1987年 / 91卷 / 10期
关键词：
ELECTROPHORESIS - Measurements - SODIUM CHLORIDE - SUSPENSIONS;
D O I：
10.1002/bbpc.19870911017
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 effective charge number of colloidal spheres was determined for monodisperse polystyrene latices (91 to approximately 2950 nm in diameter and 1. 0 to approximately 3010 mu C/cm**2 in charge density) by electrophoretic mobility measurements. The fraction of free macroions and/or gegenions ( beta ) in deionized suspension is smaller than unity and decreases rapidly with increasing sphere analytical valency (Z). The relation, log beta equals 2. 61-0. 87 log Z is obtained for the deionized suspension. The beta -value decreases on the addition of sodium chloride. beta for the organic solvent-water mixtures (organic solvents: methanol, ethanol, propanol, 1,4-dioxane, ethylene glycol, propylene glycol, N-methylformamide, and N-methylacetamide) is determined as a function of volume fraction of the organic solvent.
引用
收藏
页码：1064 / 1069
页数：6
相关论文
共 69 条
[1]   CHARGE RENORMALIZATION, OSMOTIC-PRESSURE, AND BULK MODULUS OF COLLOIDAL CRYSTALS - THEORY [J].
ALEXANDER, S ;
CHAIKIN, PM ;
GRANT, P ;
MORALES, GJ ;
PINCUS, P ;
HONE, D .
JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (11) :5776-5781
[2]  
BARENES CJ, 1978, J CHEM SOC F2, V74, P136
[3]   PROPERTIES OF CONCENTRATED POLYSTYRENE LATEX DISPERSIONS [J].
CEBULA, DJ ;
GOODWIN, JW ;
JEFFREY, GC ;
OTTEWILL, RH ;
PARENTICH, A ;
RICHARDSON, RA .
FARADAY DISCUSSIONS, 1983, 76 :37-52
[4]   OBSERVATION OF THE COUPLING OF CONCENTRATION FLUCTUATIONS TO STEADY-STATE SHEAR-FLOW [J].
CLARK, NA ;
ACKERSON, BJ .
PHYSICAL REVIEW LETTERS, 1980, 44 (15) :1005-1008
[5]  
CLARK NA, 1979, NATURE LONDON A, V281, P657
[6]  
COTTON JP, 1976, J PHYS LETT-PARIS, V37, pL75, DOI 10.1051/jphyslet:0197600370407500
[7]   REMARKS ON POLYELECTROLYTE CONFORMATION [J].
DEGENNES, PG ;
PINCUS, P ;
VELASCO, RM ;
BROCHARD, F .
JOURNAL DE PHYSIQUE, 1976, 37 (12) :1461-1473
[8]   EFFECT OF SALT ON SODIUM POLYSTYRENE SULFONATE MEASURED BY LIGHT-SCATTERING [J].
DRIFFORD, M ;
DALBIEZ, JP .
BIOPOLYMERS, 1985, 24 (08) :1501-1514
[9]   LIGHT-SCATTERING BY DILUTE-SOLUTIONS OF SALT-FREE POLY-ELECTROLYTES [J].
DRIFFORD, M ;
DALBIEZ, JP .
JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (22) :5368-5375
[10]   DIFFUSION IN HARD-SPHERE SUSPENSIONS [J].
FELDERHOF, BU ;
JONES, RB .
FARADAY DISCUSSIONS, 1983, 76 :179-187
1234567