PREPARATION AND CHARACTERIZATION OF UNIFORM COLLOIDAL PIGMENTS

Authors
WU GW MATIJEVIC E
Citation
Gw. Wu et E. Matijevic, PREPARATION AND CHARACTERIZATION OF UNIFORM COLLOIDAL PIGMENTS, Journal of dispersion science and technology, 19(6-7), 1998, pp. 903-913
Citations number
12
Categorie Soggetti
Chemistry Physical
Journal title
Journal of dispersion science and technology → ACNP
ISSN journal
01932691
Volume
19
Issue
6-7
Year of publication
1998
Pages
903 - 913
Database
ISI
SICI code
0193-2691(1998)19:6-7<903:PACOUC>2.0.ZU;2-0
Abstract
Uniform colloidal pigment dispersions of narrow size distribution were obtained by interacting aqueous solutions of D&C Red #6 dye and BaCl2 . The original particles were elongated in shape but the anisometry co uld be altered by input of ultrasonic energy. The addition of an anion ic surfactant caused a decrease of the average pigment size to similar to 40 nm. The so prepared colored dispersions showed 100% transparenc y, which is considerable higher than the commercial Ba lake of the sam e dye.