Journal article
Colloidal Stability of Stöber Silica in Acetone
Abstract
The colloidal stability of Stöber silica dispersed in acetone (99.7 wt %) was investigated and compared to the results obtained in water using electrophoresis and coagulation experiments with NaI, CaI2, and Bu4NI. A critical coagulation concentration (c c) of 19.6 mM NaI in acetone was observed whereas Bu4NI acetone solutions up to 145 mM had no effect on the stability of the silica organosols. In NaI and Bu4NI acetone solutions, the magnitude …
Authors
Ketelson HA; Pelton R; Brook MA
Journal
Langmuir, Vol. 12, No. 5, pp. 1134–1140
Publisher
American Chemical Society (ACS)
Publication Date
January 1, 1996
DOI
10.1021/la950434l
ISSN
0743-7463