Oil‐Induced Structural Change of Wormlike Micelles in Sugar Surfactant Systems
- 1 August 2006
- journal article
- research article
- Published by Taylor & Francis in Journal of Dispersion Science and Technology
- Vol. 27 (5), 611-616
- https://doi.org/10.1080/01932690600660632
Abstract
Sucrose monofatty acid esters form spherical or short‐rod micelles in water. By combining the sugar surfactant with lipophilic monoglyceride or short‐EO‐chain, poly (oxyethylene) alkyl ether (CmEOn) one‐dimensional growth of micelles takes place, and the viscosity of the aqueous mixed nonionic surfactant solution dramatically increases due to the entanglement of elongated wormlike micelles. Upon addition of oil (decane or m‐xylene), the viscosity changes in the opposite way. With a slightly polar m‐xylene, the viscosity increases, but the viscosity is sharply decreased upon addition of the saturated hydrocarbon decane. It was confirmed by SAXS results that long wormlike micelles are more extended by m‐xylene because the m‐xylene molecules are solubilized in the surfactant palisade layer, whereas decane is solubilized in the core of micelles and makes an oil pool inside. Consequently, upon addition of decane, wormlike micelles become shortened and change to short fat micelles. The oil‐induced structural change in the micellar shape is highly related to the solubilized site of oil in the aggregates.Keywords
This publication has 36 references indexed in Scilit:
- Effect of Addition and Molecular Size of Triglyceride Oils on Phase Behavior and Surfactant Self-AssembliesJournal of Oleo Science, 2004
- Effect of Added Perfume on the Stability of Discontinuous Cubic PhaseJournal of Oleo Science, 2003
- Phase Behavior and Effect of Enantiomerism on Potassium N -Dodecanoyl Alaninate/Water/Decanol SystemsJournal of Oleo Science, 2003
- Highly Concentrated Emulsions Based on the Reverse Micellar Cubic Phase.Journal of Oleo Science, 2002
- Solubilization of Polar Oils in Surfactant Self-Organized StructuresJournal of Colloid and Interface Science, 2001
- Highly Concentrated Cubic-Phase Emulsions: Basic Study on D-Phase Emulsification using Isotropic Gels.Journal of Oleo Science, 2001
- Solubilization of oil in a mixed cationic liquid crystalColloid and Polymer Science, 1999
- Transition of rodlike to globular micelles by the solubilization of additivesJournal of Colloid and Interface Science, 1989
- Critical Phenomena in a Surfactant/Water/Oil System. Basic Study on the Correlation between Solubilization, Microemulsion, and Ultralow Interfacial TensionsBulletin of the Chemical Society of Japan, 1981
- Mesomorphous phases, a factor of importance for the properties of emulsionsJournal of Colloid and Interface Science, 1969