Colloid and Polymer Science

, Volume 266, Issue 5, pp 455–461 | Cite as

Counterion binding behaviour of micelles of sodium dodecyl sulphate and bile salts in the pure state, in mutually mixed states and mixed with a nonionic surfactant

  • A. Bandyopadhyay
  • S. P. Moulik
Colloid Science


The counterion binding behaviour of micelles of sodium dodecyl sulphate (SDS) and several bile salts in the pure state have been studied, as well as in mutually mixed states, and in a mixed state with polyoxyethylene sorbitan monolaurate (PSML) as a nonionic surfactant. Electrochemical measurements have shown no counterion binding by the pure bile salt micelles and their mixtures with PSML; they can bind counterions when mixed with SDS, whereas the surfactant anions of SDS micelles bind counterions in the pure state and/or in mixed states with PSML. In the SDS-PSML and SDS-bile salts combinations, the counterion association is decreased by the increased proportions of the second component. The extent of counterion binding by the different systems is presented.

Key words

Counterion binding SDS bile salts mixedmicelles 


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Copyright information

© Steinkopff 1988

Authors and Affiliations

  • A. Bandyopadhyay
    • 1
  • S. P. Moulik
    • 1
  1. 1.Department of ChemistryJadavpur UniversityCalcuttaIndia

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