Russian Journal of Physical Chemistry A

, Volume 93, Issue 8, pp 1471–1477 | Cite as

Thermodynamics and Structure of Micelles in Aqueous Solutions of Sodium Decyl Sulfate in the Region of the Third Critical Micelle Concentration

  • V. S. Kuznetsov
  • V. P. ZherdevEmail author
  • V. G. Badelin
  • V. V. Zherdeva


Using data on heat capacity of sodium decyl sulfate solutions near the third critical micelle concentration, obtained earlier via high-precision scanning calorimetry, the temperature dependences are calculated for the thermodynamic functions of the corresponding micellar transition and the components of its Gibbs free energy. It is shown that the considered intermicellar transition, interpreted as the micellar shape transforming from cylindrical to lamellar as the concentration grows, occurs at an equilibrium molality of 0.33 and a temperature of 323 K. Correlations between the thermodynamic functions of the transition with structural changes in the micelles and the key micellar parameters are discussed.


polymorphic transition third critical micelle concentration aggregation numbers and structure of cylindrical and lamellar micelles components of the Gibbs free energy of transition 



This work was supported by the Russian Foundation for Basic Research, project no. 15-29-01068 ofi_m.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • V. S. Kuznetsov
    • 1
  • V. P. Zherdev
    • 2
    Email author
  • V. G. Badelin
    • 3
  • V. V. Zherdeva
    • 4
  1. 1.Ivanovo State UniversityIvanovoRussia
  2. 2.Ivanovo State Polytechnic UniversityIvanovoRussia
  3. 3.Krestov Institute of Solution Chemistry, Russian Academy of SciencesIvanovoRussia
  4. 4.Russian Medical Academy of Postgraduate EducationMoscowRussia

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