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A parameter predict ing the foam stability of mixtures of aqueous ionic amphiphile solutions with indifferent electrolyte

Hofmann, Matthias J. ; Motschmann, Hubert


Sodium dodecyl sulfate (SDS) is a well-defined model substance for anionic molecular surfactants. Aqueous mixtures of SDS in a surface chemically purified state and high purity NaCl were studied with respect to their equilibrium and dynamic surface tensions at a constant mean ionic activity I-mean of 1 mmol L-1. All studied solutions possessed the same equilibrium surface tension, however they ...


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