Measurement of surfactant properties using a circular capillary wave field

Measurement of surfactant properties using a circular capillary wave field  Measurements of the decay coefficient are presented for three different surfactants as a function of surface concentration. These measurements were obtained using a circular field of capillary waves. Data was purposely obtained close to the center of the tank, where the wave amplitude is large, and meniscus effects are expected to be small. The theory for linear, standing waves in a circular geometry is developed, without the usual assumption |kr|≫1. The surfactants investigated were: stearic acid, oleyl alcohol and hemicyanine. Measurements of the decay coefficient for hemicyanine have not been obtained heretofore. Several intrinsic benefits of the circular geometry are noted. The potential for improved accuracy in the measurement of surfactant properties using this geometry is suggested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Measurement of surfactant properties using a circular capillary wave field

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Publisher
Springer-Verlag
Copyright
Copyright © 2000 by Springer-Verlag Berlin Heidelberg
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s003480000119
Publisher site
See Article on Publisher Site

Abstract

 Measurements of the decay coefficient are presented for three different surfactants as a function of surface concentration. These measurements were obtained using a circular field of capillary waves. Data was purposely obtained close to the center of the tank, where the wave amplitude is large, and meniscus effects are expected to be small. The theory for linear, standing waves in a circular geometry is developed, without the usual assumption |kr|≫1. The surfactants investigated were: stearic acid, oleyl alcohol and hemicyanine. Measurements of the decay coefficient for hemicyanine have not been obtained heretofore. Several intrinsic benefits of the circular geometry are noted. The potential for improved accuracy in the measurement of surfactant properties using this geometry is suggested.

Journal

Experiments in FluidsSpringer Journals

Published: Dec 4, 2000

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