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Chapter 8

Theories of Surface and Interfacial Energies

The nature of different kinds of intermolecular attraction is described. Fowkes’ componential theory of interfacial tensions is described and used to evaluate the London-dispersion forces and Lewis-acid and Lewis-base interactions between surface molecules of various liquids and solids. The theory is shown to be compatible with the Young-Dupré equation.

Key Words: componential theory, dispersion force, interfacial energy, Lewis acid, Lewis base, acid-base, molecular interactions, surface energy, van der Waals force



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