A. Isothermal adsorption studies in the system soap-water. B. The adsorption of water by silica and alumina at high temperatures
Draper, Arthur Lincoln
Doctor of Philosophy
Systematic adsorption studies have not been made on soap samples of known crystalline form. Recent investigations in soap chemistry have been directed to the practical determination of the soap-water phase diagram and to the complex problem of soap polymorphism. The results show a myriad of stable hydrates and crystalline forms whose interrelationship is not clearly understood. The adsorption properties of established soap forms, which may explain some of the anomalous findings, have not been determined. To measure the surface properties of certain crystalline soap forms, water vapor isotherms at two temperatures have been obtained. Theoretical and structural considerations and thermodynamic calculations are utilized to partially explain the complicated adsorption which is observed.