Abstract
The Young-Laplace equation of capillarity augmented by the disjoining pressure concept of Deryagin is used to obtain the liquid-vapor interfacial profile in the contact line region of a finite contact angle system. The calculated apparent contact angle agreed reasonably well with experimental results for the alkane-PIFE system. This work demonstrates that a modified and simpler version of the model and procedures leads directly to the Young-Dupre equation.
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