Colloid and Polymer Science

, Volume 279, Issue 1, pp 1–7 | Cite as

The interaction of isomeric hexanediols with sodium dodecyl sulfate and dodecyltrimethylammonium bromide micelles

  • C. A. Kennedy
  • S. N. MacMillan
  • M. J. McAlduff
  • D. G. Marangoni
ORIGINAL CONTRIBUTION

Abstract

The micelle formation process for a typical anionic surfactant, sodium dodecyl sulfate, and a typical cationic surfactant, dodecyltrimethylammonium bromide, has been investigated in a series of mixed solvents consisting of different concentrations of isomeric hexanediols (1,2-hexanediol and 1,6-hexanediol) in water. The critical micelle concentrations and the degrees of counterion dissociation of the mixed micelles were obtained from conductance experiments. Luminescence probing experiments have been used to determine the concentration of micelles in solution and, hence, the micellar aggregation numbers of the surfactants in the mixed solvent systems. The alcohol aggregation numbers were determined by combining the partition coefficients (obtained using NMR paramagnetic relaxation enhancement experiments) with the micellar concentrations from the luminescence probing experiments. All these results are interpreted in terms of the difference in the interaction of the isomeric hexanediols with the surfactant as a function of the position of the hydroxyl groups on the six-carbon chain of the alcohol.

Key words Mixed micelles Surfactants Aggregation numbers Critical micelle concentration 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • C. A. Kennedy
    • 1
  • S. N. MacMillan
    • 1
  • M. J. McAlduff
    • 1
  • D. G. Marangoni
    • 1
  1. 1.Department of Chemistry St. Francis Xavier University P.O. Box 5000, Antigonish Nova Scotia B2G 2W5, Canada e-mail: gmarango@stfx.ca Tel.: +1-902-8672324 Fax: +1-902-8672414CA

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