Gas separation membranes from polymers of intrinsic microporosity

Peter M. Budd*, Kadhum J. Msayib, Carin E. Tattershall, Bader Ghanem, Kevin J. Reynolds, Neil B. McKeown, Detlev Fritsch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

699 Scopus citations


When polymeric membranes are employed to remove selectively one component from a gaseous mixture, there is generally a trade-off between selectivity and permeability. Data are presented for two polymers of intrinsic microporosity, PIM-1 and PIM-7, which show a significant advance across the previous upper bound of performance for commercially important gas pairs, including O 2/N2 and CO2/CH4. The exceptional properties of PIMs arise from their rigid but contorted molecular structures, which frustrate packing and so create free volume, coupled with chemical functionality giving strong intermolecular interactions.

Original languageEnglish (US)
Pages (from-to)263-269
Number of pages7
JournalJournal of Membrane Science
Issue number1-2
StatePublished - Apr 1 2005


  • Gas separation
  • Permeability
  • Polymer membranes
  • Selectivity
  • Upper bound

ASJC Scopus subject areas

  • Biochemistry
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Filtration and Separation


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