A New Isothermal DTA Method for the Study of Surfactants at Liquid Surfaces

  • H. K. Cammenga
  • H.-J. Petrick


A new isothermal DTA method for the detection and study of surfactants at the liquid/vapour interface is presented, In this method a certain mass of liquid is slightly superheated above its boiling point in two identical vessels by a constant heat input. If now a surfactant is added to one of the vessels, it more or less strongly retards the evaporative mass (and thus heat) flux from the corresponding surface and this liquid warms up with respect to the reference liquid. The time-dependent temperature difference can be used to obtain information about amount and nature of the surfactant, its adsorption isotherm, the area per molecule in the monolayer etc,


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  1. [1]
    G. T. Barnes, Specialist Periodical Reports: Colloid Science 2 (1975) 173Google Scholar
  2. [2]
    H.K. Cammenga, “Evaporation Mechanisms of Liquids”, in Curr. Top. Mat. Sci., Ed. E. Kaldis, Vol. V, 325–446Google Scholar
  3. [3]
    K. Hickman and I. White, Science 172 (1971) 718CrossRefGoogle Scholar
  4. [4]
    K. Hickman, I. White, W.V. Kayser, H.K. Cammenga, Office of Saline Water Report 808, Springfield, VA, 1973Google Scholar
  5. [5]
    I. White, J. Colloid Interf. Sci, 56 (1976) 613CrossRefGoogle Scholar
  6. [6]
    I. White, Ind, Eng. Chem. Pundam. 15 (1976) 53CrossRefGoogle Scholar
  7. [7]
    E. Wolf, F.-W. Schulze, H.-J. Petrick, H.K. Cammenga and G.T. Barnes, Tenside Detergents 16 (1979) 57Google Scholar
  8. [8]
    H.K. Cammenga, Ber. Bunsenges. Phys. Chem. 78 (1974) 1264Google Scholar

Copyright information

© Springer Basel AG 1980

Authors and Affiliations

  • H. K. Cammenga
    • 1
  • H.-J. Petrick
    • 1
  1. 1.Institut für Physikalische ChemieTU BraunschweigBraunschweigGermany

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