Display options
Cite
Dudowicz J, Freed KF, Douglas JF. Relation Between Solvent Quality and Phase Behavior of Ternary Mixtures of Polymers and Two Solvents that Exhibit Cononsolvency. J Phys Chem B. 2016;120(25):5753-8doi: 10.1021/acs.jpcb.6b03248.
Dudowicz, J., Freed, K. F., & Douglas, J. F. (2016). Relation Between Solvent Quality and Phase Behavior of Ternary Mixtures of Polymers and Two Solvents that Exhibit Cononsolvency. The journal of physical chemistry. B, 120(25), 5753-8. https://doi.org/10.1021/acs.jpcb.6b03248
Dudowicz, Jacek, et al. "Relation Between Solvent Quality and Phase Behavior of Ternary Mixtures of Polymers and Two Solvents that Exhibit Cononsolvency." The journal of physical chemistry. B vol. 120,25 (2016): 5753-8. doi: https://doi.org/10.1021/acs.jpcb.6b03248
Dudowicz J, Freed KF, Douglas JF. Relation Between Solvent Quality and Phase Behavior of Ternary Mixtures of Polymers and Two Solvents that Exhibit Cononsolvency. J Phys Chem B. 2016 Jun 30;120(25):5753-8. doi: 10.1021/acs.jpcb.6b03248. Epub 2016 Jun 21. PMID: 27253170.
Copy Download .nbib Format: NLM
Share it on

J Phys Chem B. 2016 Jun 30;120(25):5753-8. doi: 10.1021/acs.jpcb.6b03248. Epub 2016 Jun 21.

Relation Between Solvent Quality and Phase Behavior of Ternary Mixtures of Polymers and Two Solvents that Exhibit Cononsolvency.

The journal of physical chemistry. B

Jacek Dudowicz, Karl F Freed, Jack F Douglas

Affiliations

  1. The James Franck Institute and the Department of Chemistry, The University of Chicago , Chicago, Illinois 60637, United States.
  2. Materials Science and Engineering Division, National Institute of Standards and Technology , Gaithersburg, Maryland 20899, United States.

PMID: 27253170 DOI: 10.1021/acs.jpcb.6b03248

Abstract

The phase boundaries of polymer solutions in mixed solvents can be extremely complex due to the many competing van der Waals and associative interactions that can arise in these ubiquitous and technologically important complex fluids. The present paper focuses specific attention on ternary solutions of polymers (B) dissolved in a mixture of two solvents (A, C) that competitively associate with the polymer. We are particularly concerned with explaining the origin of the peculiar phenomenon of cononsolvency in mixed solvents, where a mixture of two individually good solvents behaves effectively as a poor solvent. Our computations are based on a recently developed generalization of Flory-Huggins theory that incorporates the competitive solvation of a polymer by two associating solvents. On the basis of this framework, we evaluate the limit of polymer phase stability (spinodal curves) and the second osmotic virial coefficient [Formula: see text] as a function of temperature and the composition of the pure solvent mixture that is maintained in osmotic equilibrium with the ternary solution. The calculations provide new insights into the miscibility patterns of ternary A/B/C polymer solutions exhibiting cononsolvency.

Publication Types