Experimental test of the ion condensation

被引：25

作者：

Fernández-Nieves, A ^{[1
]}

Fernández-Barbero, A ^{[1
]}

de las Nieves, FJ ^{[1
]}

机构：

[1] Univ Almeria, Dept Appl Phys, Grp Complex Fluids Phys, Almeria 04120, Spain

来源：

LANGMUIR | 2000年 / 16卷 / 09期

关键词：

D O I：

10.1021/la990920z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The objective of this work is to test the very recent Levin's theory for charged colloids (Levin, Y.; Barbosa, M. C.; Tamashiro, M. N. Europhys. Lett. 1998, 41 (2), 123). To accomplish this, the fraction of condensed ions has been experimentally obtained from electrophoretic mobility data and surface charge values. Latexes with different functionalities, surface charges, and sizes were selected in order to support the universality of the ion condensation effect. The good agreement between charge and fraction of condensed ions confirms Levin's theory and makes ion condensation a clear candidate for explaining the observed insensitivity of the electrophoretic mobility to surface charge variations, for sufficiently large charge.

引用

页码：4090 / 4093

页数：4

共 21 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]

BASTOS D, 1993, PROG COLL POL SCI S, V93, P37

[3] SURFACE AND ELECTROKINETIC CHARACTERIZATION OF FUNCTIONAL ALDEHYDE POLYMER COLLOIDS [J].

BASTOS, D ;

SANTOS, R ;

FORCADA, J ;

HIDALGO-ALVAREZ, R ;

DELASNIEVES, FJ .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1994, 92 (1-2) :137-146

[4] Effect of electrolyte type on the electrokinetic behavior of carboxylated polystyrene model colloids [J].

Bastos, D ;

delasNieves, FJ .

COLLOID AND POLYMER SCIENCE, 1996, 274 (11) :1081-1088

[5] Electrokinetic behavior of polystyrene latexes with different surface groups: Effect of heat treatment [J].

BastosGonzalez, D ;

Hidalgo-Alvarez, R ;

delasNieves, FJ .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1996, 177 (02) :372-379

[6]

de las Nieves FJ, 1999, POLYMER INTERFACES AND EMULSIONS, P167

[7] ELECTROKINETIC CHARACTERIZATION OF HIGHLY SULFONATED POLYSTYRENE MODEL COLLOIDS [J].

DELASNIEVES, FJ ;

DANIELS, ES ;

ELAASSER, MS .

COLLOIDS AND SURFACES, 1991, 60 :107-126

[8]

Fernandez-Barbero A., 1994, COLLOID SURF A, V92, P121

[9] STUDIES ON THE PREPARATION AND CHARACTERIZATION OF MONODISPERSE POLYSTYRENE LATTICES .5. PREPARATION OF CATIONIC LATTICES [J].

GOODWIN, JW ;

OTTEWILL, RH ;

PELTON, R .

COLLOID AND POLYMER SCIENCE, 1979, 257 (01) :61-69

[10]

HIDALGO-ALVAREZ R, 1986, COLLOID SURFACE, V21, P259

← 1 2 3 →