Generalized Flory–Huggins isotherms for adsorption from solution

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Abstract
A new approach to the study of solutions composed of two kinds of molecules differing in size and shape has been developed on the basis of the lattice statistical model of athermal solutions. The results have been used for determination of the adsorption isotherms of organic compounds adsorbed from solution onto homogeneous surfaces. It is shown that the resulting isotherms are generalized forms of the Flory–Huggins isotherm, to which they are reduced by Flory's approximation. The possible ways of introducing the interactions between adsorbed molecules have also been examined. Finally, a critical examination of the validity of the isotherms is made by comparison with experimental data.

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