Determination of the coefficients of selective sorption in polymer solutions in multicomponent solvents from density increments

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Abstract
The density increment method has been used to measure the selective sorption coefficient of 2,2,3,3‐tetrafluoropropanol (TFP) onto poly(methyl methacrylate) from the solvent mixture benzene‐TFP (80:20 by volume). The results are in good agreement with the data obtained by the established refractive index increment method. The density increment method seems to be a promising tool for the characterization of polymer solutions in multicomponent solvents.