“…A theoretical treatment of such reversals in terms of the three binary interaction parameters in the ternary system was presented by Z ˇivny ´and Pouchly ´26 and by Gavara et al, 24 and a compilation of numerous data illustrating the reasonable agreement between the composition dependence of λ 1 as predicted by theory and as found experimentally was published by Horta and Criado-Sancho. 27 Yet, one may wonder whether the power of available theory would be adequate to explain such consequences of small changes of molecular structure as found by Katime et al, 28 who reported that for poly(methyl methacrylate) in benzyl alcohol/butanol mixtures an inversion of preferential solvation is observed with the secondary, but not the primary, butanol. Unfortunately, no studies exist on the trend of the preferential solvation parameter in systems of a flexible polymer, such as polystyrene or methacrylate), in a mixture of a good solvent and a nonpolar paraffin precipitant.…”