Flory-Huggins-Scott equation

One can see that when p = I, this equation can be reduced to the Flory-Huggins-Scott equation for binary polymer blends. The lattice fluid theory can predict both UCST and LOST (lower critical solution temperature) types of phase diagrams for polymer blends, with further considerations of speciflc interactions (Sanchez and Balazs 1989), see more introductions about LOST in Sect. 9.1. 

We may represent the phenomena described above in terms of the Meyer-Huggins-Flory theory described in Chapter 3, but for ternary systems. The equations are basically those of Sections 6.2 and 6.3. This has been considered and modeled by Scott [24]. The distribution of the third component between the different phases for non-polar systems is largely determined by the values of the solubility parameters (or parameters) between components as well as the molecular weights. 

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