Resumen de A Low-Cost Dynamic Surface Tension Meter with a LabVIEW Interface and Its Usefulness in Understanding Foam Formation
Pietre Spanoghe, Jan Cocquyt, Paul Van der Meeren
Using standard chemical laboratory equipment, it is possible to construct a low-cost dynamic surface tension meter. The concept of the experiment seemed very appropriate to demonstrate a broad range of dynamic effects on surface tension. Everyday samples such as beer and cola revealed that the dynamic surface tension data are a very useful aid to understanding the foaming characteristics of these liquids. Further experiments into foam formation demonstrated that static surface tension data are useless in explaining such dynamic processes; on the other hand, a very nice correlation between dynamic surface tension and foam volume clearly indicated that the experimental setup presented in this paper is well suited to explaining the phenomena occurring at the surface of liquids during foam formation.
