Flory-Huggins expression, stability

For the more frequent case where one or more pure crystals can reach stability on cooling with the liquid solution, a entectic phase diagram results. The free enthalpy of the pure crystal must then reach the chemical potential of its component in the solution. For equilibrinm, the Flory-Huggins expression of equation 38 was used, with the free enthalpy of fnsion represented by AGf = A/ff ATm/Tm°- Assuming that the molecules 2 make up the larger, macromolecular solute, one can write... 

In the case of low-molecular-weight polar resins such as VE resins, relatively thin and dense adsorption layers can be assiuned. This should result in low viscosities due to low effective phase volumes of the dispersed phase and weak interparticulate interactions forces according to steric stabilization. However, addition of a solvent like styrene will influence the Hamaker constant of the liquid medium and of the adlayer and the structure of the adlayer in terms of swelling and/or multilayer formation. In particular, any multilayer formation could result in surface layer entanglement depending on the solvency of the liquid medium expressed in terms of the Flory-Huggins parameter % [11]. These effects should dramatically influence the viscosity and rest structure of the dispersion, as seen in the experiments. 

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