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Contact angles of binary liquids and their interpretation

Author: Li D.   Ng C.   Neumann A.W.  

Publisher: Taylor & Francis Ltd

ISSN: 1568-5616

Source: Journal of Adhesion Science and Technology, Vol.6, Iss.6, 1992-01, pp. : 601-610

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Abstract

Contact angles of binary liquid mixtures on Teflon FEP were measured. It was found that the equation of state for interfacial tensions, γSL = f (γLV, γsv), cannot be used to determine solid surface tensions from these contact angles of binary liquid mixtures. These findings are explained in terms of the thermodynamic phase rule.