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Ultrasonic Method of Determining the Critical Micelle Concentration of Surfactants

Nature volume 208, pages 780–781 (1965)Cite this article

Abstract

SEVERAL methods1 are available for measuring the critical micelle concentration in surfactant solutions. An examination of the models of the micelle structure shows that the major concept is that several micellar structures are possible and do exist. The formation of a micelle and each different type of its structure is looked on as that of a new phase. Hence we expected that an examination of ultrasonic velocity at different concentrations in the region of the critical micelle concentration should exhibit a discontinuity in the plot of velocity versus concentration. Sodium dodecyl sulphate at 40° C, cetyl trimethyl ammonium bromide at 35° C, potassium laurate at 35° C and tetrahydroanacardol ammonium monosulphonate at 50° C have been examined. Results obtained are plotted in the graphs (Figs. 1–4).

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Authors and Affiliations

  1. Central Electrochemical Research Institute, Karaikudi, India

    J. KUPPUSAMI & C. V. SURYANARAYANA

Authors
  1. J. KUPPUSAMI
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  2. C. V. SURYANARAYANA
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KUPPUSAMI, J., SURYANARAYANA, C. Ultrasonic Method of Determining the Critical Micelle Concentration of Surfactants. Nature 208, 780–781 (1965). https://doi.org/10.1038/208780a0

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