CONTRIBUTIONS OF PARTICLES TO ELECTRICAL-CONDUCTIVITY OF COLLOIDS

被引：10

作者：

NOVOTNY, V

机构：

[1] IBM, Almaden Research Cent, San, Jose, CA, USA, IBM, Almaden Research Cent, San Jose, CA, USA

来源：

COLLOIDS AND SURFACES | 1986年 / 21卷

关键词：

TITANIUM COMPOUNDS - Electric Conductivity - XYLENE - Electric Conductivity;

D O I：

10.1016/0166-6622(86)80093-2

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：

A new method was developed which permits transient and background electrical conductivity measurements on supernatants and colloids with variable concentration of particles in the same cell. The method was applied to two nonaqueous titanium dioxide-xylene dispersions, one with a physisorbed charge control agent (cca) and another with a chemically attached stabilizer and cca. At particles volume fractions 0. 01-0. 1, the dispersions have electrical transient conductivities similar to those of the supernatants, but with measurable contribution by charged particles to the transient conduction. This agrees with estimates based on measured particle mobilities and sizes.

引用

页码：219 / 233

页数：15

共 18 条

[1] ELECTROHYDRODYNAMIC STABILITY OF DIELECTRIC LIQUIDS DURING TRANSIENT REGIME OF SPACE-CHARGE-LIMITED INJECTION [J].

ATTEN, P .

PHYSICS OF FLUIDS, 1974, 17 (10) :1822-1827

[2] INTERACTIONS OF PROTON DONORS WITH COLLOIDAL ELECTROLYTES IN APOLAR SOLVENTS [J].

EICKE, HF ;

ARNOLD, V .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1974, 46 (01) :101-110

[3]

MACDONALD DD, 1982, MODERN ASPECTS ELECT, V14

[4] STABILITY OF NON-AQUEOUS DISPERSIONS .1. RELATIONSHIP BETWEEN SURFACE POTENTIAL AND STABILITY IN HYDROCARBON MEDIA [J].

MCGOWN, DNL ;

PARFITT, GD ;

WILLIS, E .

JOURNAL OF COLLOID SCIENCE, 1965, 20 (07) :650-&

[5] MEASUREMENT OF MOBILITIES OF PARTICLES IN LIQUIDS BY OPTICAL AND ELECTRICAL TRANSIENTS [J].

NOVOTNY, V .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (04) :2787-2794

[6] ELECTRICAL-CONDUCTION IN SURFACTANT-WATER-NONAQUEOUS LIQUID-SYSTEMS [J].

NOVOTNY, V .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1986, 133 (08) :1629-1636

[7] TRANSIENT CONDUCTION OF WEAKLY DISSOCIATING SPECIES IN DIELECTRIC FLUIDS [J].

NOVOTNY, V ;

HOPPER, MA .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1979, 126 (06) :925-929

[8] PARTICLE CHARGES AND PARTICLE-SUBSTRATE FORCES BY OPTICAL TRANSIENTS [J].

NOVOTNY, V .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (01) :324-332

[9] PROPERTIES OF CHARGED NON-AQUEOUS COLLOIDS IN A LOW CONDUCTIVITY REGIME [J].

NOVOTNY, V .

COLLOIDS AND SURFACES, 1981, 2 (04) :373-385

[10]

NOVOTNY V, 1983, MEASUREMENTS SUSPEND, pCH16

← 1 2 →