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Stückrad B.♦, Hiller W.J.♦, Kowalewski T.A., Measurement of dynamic surface tension by the oscillating droplet method,
Experiments in Fluids, ISSN: 0723-4864, DOI: 10.1007/BF00223411, Vol.15, No.4, pp.332-340, 1993 Abstract:
An optical measuring method has been applied to determine the dynamic surface tension of aqueous solutions of heptanol. The method uses the frequency of an oscillating liquid droplet as an indicator of the surface tension of the liquid. Droplets with diameters in the range between 100 and 200 μm are produced by the controlled break-up of a liquid jet. The temporal development of the dynamic surface tension of heptanol-water solutions is interpreted by a diffusion controlled adsorption mechanism, based on the “three-layer” model of Ward and Tordai. Measured values of the surface tension of bi-distilled water, and the pure dynamic and static (asymptotic) surface tensions of the surfactant solutions are in very good agreement with values obtained by classical methods. Affiliations:
| Stückrad B. | - | Max-Planck-Institut für Strömungsforschung (DE) | | Hiller W.J. | - | Max-Planck-Institut für Strömungsforschung (DE) | | Kowalewski T.A. | - | IPPT PAN |
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