Influence of quench medium on the structures and gas permeation properties of polysulfone membranes made by wet and dry/wet phase inversion

Ingo Pinnau, William J. Koros*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Essentially defect-free integrally-skinned asymmetric polysulfone membranes were fabricated by a dry/wet phase inversion process using forced-convective evaporation. The choice of the quench medium is of utmost importance for the formation of gas separation membranes having high selectivities combined with high gas fluxes. The integrally-skinned asymmetric membranes were characterized by gas permeation measurements and field emission scanning electron microscopy. This study indicates that the phase separation and vitrification processes occurring during the wet phase inversion step should be as rapid as possible to generate the highest performance gas separation membranes.

Original languageEnglish (US)
Pages (from-to)81-96
Number of pages16
JournalJournal of Membrane Science
Volume71
Issue number1-2
DOIs
StatePublished - Jul 3 1992

Keywords

  • defect-free skin layers
  • integrally-skinned asymmetric membranes
  • membrane structure
  • phase inversion processes
  • polysulfone
  • quench medium

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Fingerprint Dive into the research topics of 'Influence of quench medium on the structures and gas permeation properties of polysulfone membranes made by wet and dry/wet phase inversion'. Together they form a unique fingerprint.

Cite this