Molecular weight dependence of gas permeability and selectivity in copolyimides

G. C. Eastmond, P. C.B. Page, J. Paprotny, R. E. Richards, R. Shaunak

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The gas permeation behaviour of a number of polyimide copolymers, including a series of copolyimides of identical structure with different molecular weights, have been investigated. Permeabilities and selectivities were found to vary over a broad molecular weight range at high molecular weights. Differences in permeability with molecular weight can be comparable to differences due to marked changes in chemical structure.

Original languageEnglish (US)
Pages (from-to)667-670
Number of pages4
Issue number3
StatePublished - 1993


  • copolyimide
  • gas diffusion
  • molecular weight
  • permeability
  • selectivity

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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