A. Waltermo et al., FOAM FILMS AND SURFACE FORCE STUDIES OF AQUEOUS-SOLUTIONS OF OCTYL-BETA-GLUCOSIDE, Journal of dispersion science and technology, 15(3), 1994, pp. 273-296
The interactions at the air/liquid and the liquid/solid interface have
been studied for octyl-beta-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 t
hick, are formed. The stabilizing forces in the black films are relate
d to the interactions within and between the layers. The forces acting
between octyl-beta-glucoside surfactant layers adsorbed on hydrophobi
zed mica were investigated with the interferometric type surface force
apparatus. The forces measured between the sugar head-groups were dim
ethylamine oxide and monoglycerides. However, considerably more long-r
ange repulsions are observed between surfactants with oligoethylene ox
ide head-groups.