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M. V. Poteshnova, N. M. Zadymova, E. V. Grigoriev
Characteristics
of ternary o/w microemulsions Tween-80-toluene–water
Abstract
The ternary o/w
microemulsions Tween-80–toluene–water were investigated by 1H NMR spectroscopy. It was shown that 60% of toluene
is localized in hydrophobic core and 40% in oxyethylene part of microemulsion
droplets. The aggregation number, the radius of hydrophobic core, thickness of
oxyethylene shell and the area per surfactant molecule on the surface of
hydrophobic core (Q) in the investigated microemulsion were calculated.
It was shown that the enlarge of microemulsion droplets is stopped when Q
value is decreasing up to the value of the area per surfactant molecule in
“close–packed” monolayer.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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