ELECTROPHORETIC BEHAVIOR OF HYDROSOLS OF ULTRADISPERSE DIAMOND AND MODIFICATION OF ITS SURFACE

Authors
CHIGANOVA GA BONDAR VA CHIGANOV AS
Citation
Ga. Chiganova et al., ELECTROPHORETIC BEHAVIOR OF HYDROSOLS OF ULTRADISPERSE DIAMOND AND MODIFICATION OF ITS SURFACE, Colloid journal of the Russian Academy of Sciences, 55(5), 1993, pp. 774-775
Citations number
5
Categorie Soggetti
Chemistry Physical
Journal title
Colloid journal of the Russian Academy of Sciences → ACNP
ISSN journal
1061933X
Volume
55
Issue
5
Year of publication
1993
Pages
774 - 775
Database
ISI
SICI code
1061-933X(1993)55:5<774:EBOHOU>2.0.ZU;2-E
Abstract
The method of macro-electrophoresis is used to determine values of the zeta-potential of particles of ultradisperse diamond in solutions of AlCl3. It is shown that an increase in the concentration of aluminum i ons to 0.5.10(-4) M leads to a decrease in the negative charge of the diamond particles; the dispersions coagulate in more concentrated solu tions of AlCl3. Chemical modification of the surface of ultradisperse diamond by aluminum ions is used to obtain stable hydrosols with posit ively charged diamond particles.