Material selection considerations for gas separation processes

W. J. Koros, B. J. Story, S. M. Jordan, K. O'Brien, G. R. Husk

Research output: Contribution to journalArticlepeer-review


Advantages and disadvantages associated with common membrane types used in gas separation operations are reviewed. Comparisons between dense‐walled and several different types of asymmetric structures are made. In addition to overall membrane structure, the molecular natures of different membrane material types are treated. Tradeoffs between the use of rubbery and glassy polymers are considered first, followed by a treatment of the optimization of glassy membrane permeability and permselectivity properties. Material optimization principles are defined in terms of the basic thermodynamic solution and kinetic transport properties of polymers, and applications of these principles are illustrated for a modified poly(phenylene oxide) and a homologous series of polyimides derived from pyromellitic dianhydride.

Original languageEnglish (US)
Pages (from-to)603-610
Number of pages8
JournalPolymer Engineering & Science
Issue number8
StatePublished - Apr 1987
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry


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