Abstracto
Identification of the interfacial energies determined by the Gibbs adsorption integral in solid-liquid-vapour systems
Ahmed Kamel Helmy*, Eladio A.Ferreiro
It is shown that the Gibbs adsorption integral yields differences of certain interfacial energies in solid-liquid-vapour systems, namely (ï§S-ï§SV), (ï§S- ï§SL) and (ï§SV-ï§SL), where ï§S, ï§SV and ï§SL are the solid surface energy at zero vapour pressure, the solid-vapour interfacial energy atmonolayer coverage and the solid-liquid interfacial energy respectively. It is also shown that the liquid-solid contact angle could be obtained by evaluating the integral in the range of vapour pressures between saturation and monolayer coverage.
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