Interplay between self-assembly and phase separation in a polymer-complex model

Tianhao Li, W. Benjamin Rogers, William M. Jacobs

Research output: Contribution to journalArticlepeer-review

Abstract

We present a theoretical model for predicting the phase behavior of polymer solutions in which phase separation competes with oligomerization. Specifically, we consider scenarios in which the assembly of polymer chains into stoichiometric complexes prevents the chains from phase-separating via attractive polymer-polymer interactions. Combining statistical associating fluid theory with a two-state description of self-assembly, we find that this model exhibits rich phase behavior, including reentrance, and we show how system-specific phase diagrams can be derived graphically. Importantly, we discuss why these phase diagrams can resemble - and yet are qualitatively distinct from - phase diagrams of polymer solutions with lower critical solution temperatures.

Original languageEnglish (US)
Article number064501
JournalPhysical Review E
Volume108
Issue number6
DOIs
StatePublished - Dec 2023

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

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