Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 426, Issue -, Pages 1-5Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.03.010
Keywords
Interfacial tension measurement; Pendant drop; Image processing; Oil/water system
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The interfacial tension between silicone oil and water is measured in the temperature range 18-35 degrees C. A novel method is used which promises prospects for the application to other liquid/liquid systems. The method is based on digital image processing of the contour of a pendant drop in combination with a pressure measurement. In contrast to existing algorithms axisymmetric drop shape analysis (ADSA) relying on iterative solutions of the Laplace equation the interfacial tension is obtained without Laplace from a force balance yielding an explicit expression for the interfacial tension. (C) 2013 Elsevier B.V. All rights reserved.
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