Phase Behavior of Ternary Polymer Mixtures in a Common Solvent.

ABSTRACT: The Edmond-Ogston model for phase separation is extended to ternary polymer mixtures in a common solvent (de facto a quaternary mixture). The model assumes a truncated virial expansion of the Helmholtz free energy up to the second-order terms in the concentration of the polymers, and the second virial coefficients (B₁₁, B₂₂, B₃₃, B₁₂, B₁₃, B₂₃) are the six parameters of the model. New results from this model are presented in relation to earlier work on binary mixtures: a necessary condition for the virial coefficients for the occurrence of phase separation in two or three phases, an analysis of the different regions of (local) thermodynamic instability using the Descartes sign rule,

SUBMITTER: Bot A 

PROVIDER: S-EPMC10413477 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature