FOAM FILMS AND SURFACE FORCE STUDIES OF AQUEOUS SOLUTONS OF OCTYL-β-GLUCOSIDE
- 1 January 1994
- journal article
- research article
- Published by Taylor & Francis in Journal of Dispersion Science and Technology
- Vol. 15 (3) , 273-296
- https://doi.org/10.1080/01932699408943558
Abstract
The interactions at the air/liquid and the liquid/solid interface have been studied for octyl-β-glucoside. With the thin film balance the thickness of the equilibrium liquid films is determined as a function of surfactant concentration, inert salt concentration and pH. At high surfactant concentration and/or at low pH black films, about 4.6 nm thick, are formed. The stabilizing forces in the black films are related to the interactions within and between the layers. The forces acting between octyl-β-glucoside surfactant layers adsorbed on hydrophobized mica were investigated with the interferometric type surface force apparatus. The forces measured between the sugar head-groups were similar to those acting between other small nonionic groups like dimethylamine oxide and monoglycerides. However, considerably more long-range repulsions are observed between surfactants with oligoethylene oxide head-groups.Keywords
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