The thermodynamics of monolayer penetration at constant area: Part 2

Experiments on the penetration of cetyl alcohol monolayers by sodium dodecyl sulphate over a range of temperatures are reported. The penetration isotherms are used to calculate the surface densities of the penetrating molecules, on the basis of the theory developed in part 1 for the application of the Gibbs adsorption isotherm to a perturbed penetration system. Clausius-Clapeyron type equations are then developed for the integral and isosteric heats of monolayer penetration.