The intrinsic viscosity of a polymer in a solvent mixture is related to the excess free energy of the solvents. Intrinsic viscosities at different temperatures are obtained for poly‐2‐vinylpyridine–chloroform–ethyl alcohol, poly(methyl methacrylate)–chloroform–ethyl alcohol, polystyrene–cyclohexane–benzene, polystyrene–dioxane–chloroform, and polystyrene–cyclohexane–ethanol. Qualitative, but not quantitative, agreement is found between theory and experiment.
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Dondos et al. (1969) studied this question.
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