Abstract
Microemulsion regions in the system waterpotassium oleate-pentanol-benzene were determined by titration and equilibrium compositions in multiphase areas were analyzed.
The results showed the W/O microemulsions be inverse micellar solutions in accordance with earlier results. O/W microemulsions are related to the aqueous micellar solutions but with a mote complex structure. At high electrolyte content the inverse micelkr solution was in equilibrium with a dilute aqueous solution. The water solubilizing capacity of W/O microemulsions passed through a maximum with increasing soap/alcohol ratio, and excess water gave a phase transition to a lamellar liquid crystal at low electrolyte content of the water. The lamellar liquid crystalline phase showed no extremum of properties at compositions in equilibrium with W/O microemulsion of maximum water solubility and the basis for optimum stability of the inverse micellar solutions at a certain alcohol soap ratio was referred to conditions within the solution. The reason for this maximum solubilization capacity was found not to be related to intermicellar interactions but was confined to intra-micellar conditions. Of these conditions of the electric double layer were decisive.
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Friberg, S., Burasczenska, I. (1978). Microemulsions in the water-potassium oleate-benzene system. In: Emulsions. Progress in Colloid and Polymer Science, vol 63. Steinkopff, Heidelberg. https://doi.org/10.1007/BFb0117146
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DOI: https://doi.org/10.1007/BFb0117146
Publisher Name: Steinkopff, Heidelberg
Print ISBN: 978-3-662-16093-0
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