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Partial phase behavior of ionic microemulsions stabilized by sodium dodecylsulfate and alcohol cosurfactants
YKI – Ytkemiska institutet.
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1992 (English)In: Progress in Colloid and Polymer Science, ISSN 0340-255X, E-ISSN 1437-8027, Vol. 88, 36-41 p.Article in journal (Refereed)
Abstract [en]

Ionic microemulsions, stabilized by sodium dodecylsulfate and alcohol cosurfactants, have been characterized with respect to phase behavior, particularly the composition of the different phases in Winsor type I, II and III systems. The system containing brine, octane, sodium dodecylsulfate and 1-butanol shows a regular phase behavior, in conformity with the anticipated behavior, i.e., 2-3-2 phases. The phase transitions with increasing 1-butanol concentration are analogous to those occurring with increasing salinity, when compared with previous investigations. For the system containing brine, cyclohexane, sodium dodecylsulfate and benzyl alcohol, the behavior becomes more complex, even at low surfactant contents. The transitions are 2-3-2-3-2 phases over a wide composition range. The compositions of the phases at equilibrium are discussed in relation to structural considerations, as determined by conductivity and NMR self-diffusion measurements.

Place, publisher, year, edition, pages
1992. Vol. 88, 36-41 p.
Keyword [en]
Microemulsion, partial phase equilibria, surfactant partition, cosurfactant partition, sodium dodecylsulfate, 1-butanol, benzyl alcohol, conductivity, NMR self-diffusion
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27418OAI: oai:DiVA.org:ri-27418DiVA: diva2:1054422
Note
A818Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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