Adsorption of stearic acid and diethylhexyl phosphate on magnetic metallic iron pigments: Electrical surface charging and adsorption competition

被引：8

作者：

Papirer, E

Walter, E

Vidal, A

Siffert, B

机构：

[1] Inst. de Chim. des Surf. Interfaces, F-68057 Mulhouse Cedex

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1997年 / 187卷 / 02期

关键词：

magnetic ink; iron pigment; stearic acid adsorption; bis(2-ethylhexyl) phosphate adsorption; zeta potential; adsorption;

D O I：

10.1006/jcis.1996.4744

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 adsorption of stearic acid and bis(2-ethylhexyl) phosphate, from toluene and THF solutions, on magnetic iron pigments (MP) was examined, Adsorption isotherms as well as the concomitant variations of surface electrical (zeta) potential were determined. The formation of electrical surface charges is explained by charge transfer processes between the solvents, the adsorbates, and MP. An adsorption competition is evidenced when contacting MP with the adsorbates using C-14-labeled stearic acid. (C) 1997 Academic Press.

引用

页码：529 / 538

页数：10

共 8 条

[1]

COPPER WD, 1977, J CHEM SOC FARADAY T, V70, P858

[2]

Hunter R. J., 1988, Zeta Potential in Colloid Science, Principles and Applications, VThird

[3]

KOCH CB, 1991, NATO ADV SCI I B-PHY, V259, P559

[4] COLLOID VIBRATION POTENTIAL AND THE ELECTROKINETIC CHARACTERIZATION OF CONCENTRATED COLLOIDS [J].