Flory–Huggins solution theory

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Flory–Huggins solution theory is a lattice model of the thermodynamics of polymer solutions which takes account of the great dissimilarity in molecular sizes in adapting the usual expression for the entropy of mixing. The result is an equation for the Gibbs free energy change Δ G m i x {\displaystyle \Delta G_{\rm {mix}}} for mixing a polymer with a solvent. Although it makes simplifying assumptions, it generates useful results for interpreting experiments. The theory is named after Paul Flory[1] and Maurice Loyal Huggins[2] who developed it independently in 1941.

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