Relation Between Hamaker Constant and Surface Tension

5 Relation Between Hamaker Constant and Surface Tension 

it is now possible to rearrange Equation (572) by combining it with Equation (573) 

If the interaction type is only dispersion, then Equation (575) can be used to estimate the interfacial energy, y12, from the surface energy of the interacting materials in the absence of experimental data on (see Sections 9.1 and 10.1). 

When the two surfaces are in contact, that is (D = D0), then Equation (577) gives V(D)robi = 0 however when (D = that is the newly created two new equilibrium surfaces are separated to infinite distance to form two isolated surfaces, we have 

It is obvious that V(D)Totai in Equation (578) corresponds to the free energy of cohesion, so that [V(D)Total = 2yx. Equating this to Equation (578) we obtain 

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