Adhesion under the Influence of Molecular Forces

Change in Adhesion under the Influence of Molecular Forces 

Quantitative Evaluation of Change in Adhesive Force due to Molecular Interaction. Under the influence of molecular forces, the magnitude of adhesion may change. The constants of molecular interaction depend on the properties of the contiguous bodies and the surrounding liquid medium. By changing the 

According to Eq. (II.9), the molecular interaction constant for condensed bodies will depend on the quantity which determines the interaction of a pair of molecules. A qualitative estimate of molecular interaction by means of Xj-y is given in [74]. In an investigation of the absorption of various molecules on silica gel, Eq. (II. 3) was used to calculate approximate values of the constants of dispersion interaction for three typical groups 

We have listed below the values obtained for the relative magnitude of the energy of dispersion interaction of these functional groups with certain molecules  

The energy of interaction of these molecules with surface hydroxyl groups is 30-45% higher than for silica gels with methylated or fluorinated surfaces. 

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