Relation between miscibility and solvent quality in solutions of polymers solvated in mixed solvents
Jack F. Douglas, Jacek Dudowicz, Karl Freed
A recently developed Flory-Huggins type theory for the competitive solvation of a polymer B by two small-molecule liquids A and C is utilized to examine the nature of the phase boundaries for this general class of ternary solutions (with strong associative interactions between the polymer and the solvents) and to quantify how solvent composition aﬀects polymer miscibility. In particular, we evaluate the boundaries for phase stability (spinodal curves) and the second osmotic virial coeﬃcient B2 as functions of temperature T and the relative composition of the pure solvent in determining the miscibility patterns of the ternary A/B/C polymer solutions with both associative and van der Waals interactions.mixtures in osmotic equilibrium with the ternary solution. Special attention is focused on illustrating the complementary role of the spinodals curves and the plots of second osmotic virial coeﬃcient in determining the miscibility patterns of the ternary A/B/C polymer solutions with both associative and van der Waals interactions.
, Dudowicz, J.
and Freed, K.
Relation between miscibility and solvent quality in solutions of polymers solvated in mixed solvents, Macromolecular Rapid Communications
(Accessed December 9, 2023)