Simulation on pore formation from polymer solution at surface in contact with solid substrate via thermally induced phase separation

Yasushi Mino, Naruki Fukukawa, Hideto Matsuyama

Research output: Contribution to journalArticlepeer-review

Abstract

The formation of porous structures from polymer solutions at the surface in contact with various solid surfaces via a thermally-induced phase separation (TIPS) process is investigated. The pore formation process at the bulk and the surface of the poly(methyl methacrylate)/cyclohexanol solution is simulated with a model based on the phase field method. When the compatibilities between the polymer-rich phase formed by the phase separation and the solid surface are high or low, surface porosity decreases. In contrast, for the solid surface having similar compatibilities with the polymer and solvent, high surface porosity is achieved. This indicates that the compatibility between the solid surface and polymer solution is important, and that optimal compatibility results in high surface porosity. The knowledge obtained in this work is useful to design the coagulation bath component in the membrane preparation process by TIPS for achieving high surface porosity.

Original languageEnglish
Article number527
JournalMembranes
Volume11
Issue number7
DOIs
Publication statusPublished - Jul 2021

Keywords

  • Phase field simulation
  • Polymeric membrane
  • Solid surface
  • Surface porosity
  • Thermally induced phase separation

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Filtration and Separation

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