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Polymer-Solvent Phase Separation and Criticality in the Formation of Porous Polymeric Solids: A Modeling Study

preprint
submitted on 19.09.2019 and posted on 04.10.2019 by Adam Willard, Paul E. Teichen

This manuscript describes a model for simulating the properties of polymer-solvent mixtures and the nonequilibrium processes that lead to their demixing and gel formation. In this model, the description of the system is based on a coarse grained lattice model of the polymer density field whose parameters can be chosen to reflect the microscopic characteristics of specific chemical systems. By using a lattice model, we are able to perform block renormalization and thereby access study the critical behavior of these systems upon demixing. We relate this critical behavior to the hierarchical structure of the resulting extended gel-like polymer network.

History

Email Address of Submitting Author

awillard@mit.edu

Institution

Massachusetts Institute of Technology

Country

United States

ORCID For Submitting Author

0000-0002-0934-4737

Declaration of Conflict of Interest

none

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