Structure of Micelles in Liquid Paraffin, Squalane, and Squalene

1 Structure of Micelles in Liquid Paraffin, Squalane, and Squalene 

Unlike the aqueous surfactant systems, the miscibility of solvent and surfactant increases in surfactant-oil systems with the rise of temperature because 

The absence of a local maximum and minimum on the lower-r side indicates nearly homogeneous electron density distribution (no core-shell structure) in scattering particles. This behavior is similar to the surfactant/water systems, where 

It is well known that a small amount of water induces micellization of the poly(oxyethylene)-type nonionic surfactants in nonpolar organic solvents. Even when surfactant aggregation does not occur, or the aggregation number is very small in a particular solvent in the absence of other materials, the addition of an insoluble solvent like water, may give rise to aggregation with consequent solubilization of the additives [83]. Addition of water is expected to decrease the spontaneous curvature as a result of increase in the headgroup repulsion. Besides, the added water solubilized in the interior of the micelle core in the nonpolar medium 

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