Abstract
The most fundamental description of an interface is the thermodynamic free energy per unit area, γij governs a range of solid-solid, solid-liquid and solid-vapour interactions. The determination of the solid-vapour free energy is not straight-forward. In this chapter, conventional experimental techniques such as; sessile drop contact angle measurements, capillary rise and Wilhelmy plate is presented. Models for the determination of surface energy from contact angles are discussed. Furthermore, recent developments in inverse gas chromatography and dynamic vapour sorption approaches for the evaluation of the solid surface free energy are also described.
Published Version
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