Abstract
A method is proposed to calculate the short range force (SR) contribution, as well as the long range force (LW) contribution to the work of adhesion ( W A) of water-aromatic hydrocarbon interactions. The W A SR component which arises from H-bonding interactions is calculated by the use of mercury-alkane, mercury-aromatic, water-alkane, and water-aromatic interfacial tension data with a methodology using an interaction efficiency ( α 12 LW) term for the calculation of LW forces, which arise from London dispersion, Keesom orientation, and Debye induction forces. It is found that approximately 23% of the work of ahesion is due to H-bonding interactions; however, the individual W A SR value for each interaction differs within ±10%, possibly due to the difference in the number of aromatic molecules per unit of interfacial area at the water interface.
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