The Wetting of Paraffin by Aqueous Solutions of Fatty Alcohol Homologues

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Abstract
The wettability of paraffin towards aqueous solutions of n-propyl, n-butyl, n-amyl and n-octyl alcohols has been studied. It has been found that the wetting isotherm which had been proposed by the present author and had been valid for the wetting of paraffin by an aqueous ethyl alcohol solution, could also be applied successfully to the present systems. The equations of state for the adsorbed films of these alcohols at the paraffin/aqueous solution interface were obtained. It was further shown that Traube’s rule holds for the paraffin/aqueous alcohol solution interface as well as for the air/solution interface. The adsorption energies found were 824 cal./mol. CH2 for the paraffin/solution interface and 656 cal./mol. CH2 for the aqueous surface.