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Microemulsions: Structures, surfactant layer properties and wetting transitions

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  • Abillon, O.
  • Lee, L.T.
  • Langevin, D.
  • Wong, K.

Abstract

We review briefly the basic known features of microemulsion structures, emphasizing the importance of the surfactant layer bending elasticity. The results for water-alkane-nonionic-surfactant systems, confirming the close relationship between the maximum characteristic size in the microemulsion and the persistence length of the surfactant layer, are presented. We show that microemulsions are formed when the surfactant layer bending moduli are in a well defined range: if the bending modulus is too large, ordered lamellar phases are obtained, while if it is too small, the surfactant film cannot form, and the medium is a structureless molecular mixture. The evolution between microemulsions and molecular mixtures is continuous; its relationship with the wetting transition between the microemulsion and the two excess phases is discussed.

Suggested Citation

  • Abillon, O. & Lee, L.T. & Langevin, D. & Wong, K., 1991. "Microemulsions: Structures, surfactant layer properties and wetting transitions," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 172(1), pages 209-218.
    • Handle: RePEc:eee:phsmap:v:172:y:1991:i:1:p:209-218
    DOI: 10.1016/0378-4371(91)90321-3
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    References listed on IDEAS

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    1. Schick, Allen, 1989. "Congress and Economic Policymaking. By Darrell M. West. Pittsburgh: University of Pittsburgh Press, 1987. 203p. $24.95 cloth, $12.95 paper," American Political Science Review, Cambridge University Press, vol. 83(1), pages 309-310, March.
    2. Jeng, Huei-Yann, 1988. "The Impacts of Demographic Variables on the Price and Income Coefficients of the Travel Cost Model," 1988 Annual Meeting, August 1-3, Knoxville, Tennessee 270206, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
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