Abstract
WHEN a single solute is adsorbed from one phase to a water – oil interface, the interfacial tension usually falls in a regular manner with increasing adsorbate concentration, to a limiting value corresponding to a close-packed monomolecular surface layer. In the very few cases1 where exceptions have been found to this rule, the adsorbates have been soaps or similar hydrolysable molecules, and inter-attraction between the long-chain molecules and their products by hydrolysis has been given as explanation of the sharp breaks which occur in the interfacial tension – adsorbate concentration curves.
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References
Powney and Addison, Trans. Faraday Soc., 34, 628 (1938).
Powney and Addison, Trans. Faraday Soc., 33, 1243 (1937).
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ADDISON, C. ‘Breaks’ in Interfacial Tension Curves. Nature 144, 249–250 (1939). https://doi.org/10.1038/144249b0
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DOI: https://doi.org/10.1038/144249b0
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