Gas permeation through poly (dimethylsiloxane)-plasma polymer composite membranes

Sae Joong Oh, W. P. Zurawsky

Research output: Contribution to journalArticlepeer-review

Abstract

The permeation of CO2, O2, N2, and CH4 through composite membranes consisting of poly(dimethylsiloxane) (PDMS) substrates coated with fluorine rich plasma polymers was studied. Measurements were made with different thicknesses of plasma polymer (O to 1 μm) and at different temperatures between 35 and 75°C, which allows us to determine the permeability coefficients and permeation activation energies of each layer. The results are compared to a simple resistance in series permeation model. For CH4 and N2 the permeabilities of the composite membranes deviate from the resistance in series model. This is most likely due to plasma modification of the PDMS surface during the early stages of plasma polymerization.

Original languageEnglish (US)
Pages (from-to)89-99
Number of pages11
JournalJournal of Membrane Science
Volume120
Issue number1
DOIs
StatePublished - Oct 30 1996

Keywords

  • Composite membranes
  • Gas and vapor permeation
  • Plasma polymerized membranes

ASJC Scopus subject areas

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

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