Gas permeation properties of poly(1,1′-dihydroperfluorooctyl acrylate), poly(1,1′-dihydroperfluorooctyl methacrylate), and poly(styrene)-b-poly(1,1′-dihydroperfluorooctyl acrylate) block copolymers

Michelle E. Arnold, Kazukiyo Nagai, Benny D. Freeman*, Richard J. Spontak, Douglas E. Betts, Joseph M. DeSimone, Ingo Pinnau

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The permeabilities of rubbery poly(1,1′-dihydroperfluorooctyl acrylate) (PFOA), glassy poly(1,1′-dihydroperfluorooctyl methacrylate) (PFOMA), and poly(styrene)-b-poly(1,1′-dihydroperfluorooctyl acrylate) (PS-b-PFOA) diblock copolymers to N2, O2, H2, CH4, C2H6, and CO2 at 446 kPa and to C3H8 at 308 kPa are reported as a function of temperature. In general, PFOMA has lower fractional free volume, smaller gas permeability coefficients, and larger activation energies of permeation than PFOA, consistent with the more restricted long-range segmental mobility of PFOMA. The PS-b-PFOA copolymers exhibit complex microphase-separated morphologies, and their gas permeability coefficients are intermediate between those of glassy PS and rubbery PFOA, decreasing in magnitude with increasing PS content.

Original languageEnglish (US)
Pages (from-to)5611-5619
Number of pages9
JournalMacromolecules
Volume34
Issue number16
DOIs
StatePublished - Jul 31 2001

ASJC Scopus subject areas

  • Materials Chemistry

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