The Shape of the Disjoining Pressure Isotherm – its Effect on the Line Tension of Common Black (Emulsion and Foam) Films

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Abstract
By the systematic direct numerical computation of the line tension of common black films it has been demonstrated that the value and sign of this line tension are very sensitive to the variation of the shape of the disjoining pressure isotherm and this finding may be used to obtain additional information on the surface forces acting in these films from the experimental values of the line tension.