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The role of the buoyancy force for the development of the auto-oscillations of the surface tension is considered by comparison of the oscillation characteristics for the corresponding pairs of fatty acids and aliphatic alcohols. The effect of buoyancy on the oscillation characteristics is negligibly small for systems with low solubility surfactants, such as octanol, octanoic acid or diethyl phthalate;...
The new phenomenon of surface tension auto-oscillations can be initiated by using fatty acids as surface active substances. The oscillation characteristics of the adequate surfactant systems fatty acid-water and aliphatic alcohol-water having the same alkyl chain length, are compared. The results show that the buoyancy should be taken into account if the solubility of the surfactant is large enough...
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