Analysis of the Young equation and use of the Kelvin equation in calculating the Gibbs excess

Vertical resolution of the forces acting in the Young model [Phil. Trans. Roy. Soc. 84 (1805)] of a drop of liquid on a flat surface leads to an expression for the vertical component of force on the three-phase-line and a quantitative explanation of contact angle hysteresis. Derivation of a modified...

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Bibliographic Details
Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2002-03, Vol.202 (1), p.33-39
Main Author: Johnson, Alan E
Format: Article
Language:English
Subjects:
Contact angle
Kelvin equation
Surface tension
Young equation
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Summary:Vertical resolution of the forces acting in the Young model [Phil. Trans. Roy. Soc. 84 (1805)] of a drop of liquid on a flat surface leads to an expression for the vertical component of force on the three-phase-line and a quantitative explanation of contact angle hysteresis. Derivation of a modified Kelvin equation has been used to explain the significance of the cubic turning points of the Van der Waals’ equation and the calculation of the Gibbs’ surface excess in a two-phase system.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(01)01049-4