Relaxation phenomena in dense glassy polymer membranes

Richard Hendrik Bouke Bouma

Research output: ThesisPhD Thesis - Research UT, graduation UT

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Abstract

Dense polymeric films can be used as permeation-selective barriers which change the composition of a fluid by differences in solubility and/or diffusivity of fluid components in the membrane material. In general glassy polymers show rather high selectivities, but usually in combination with low fluxes. Since membrane fluxes are inversely proportional to the selective barrier thickness, membranes are made as thin as possible. For pervaporation membranes the approach to prepare thin membranes failed with respect to the selectivity of the membrane. In literature membrane selectivities were reported to decrease with decreasing membrane thickness. Furthermore the membrane preparation procedure by drying a polymer solution cast on a suitable support influences the selective permeation.
Original languageEnglish
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Strathmann, H., Supervisor
  • Smolders, C.A., Supervisor
Award date27 Jan 1995
Place of PublicationEnschede
Publisher
Print ISBNs90-9007846-0
Publication statusPublished - 27 Jan 1995

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    Bouma, R. H. B. (1995). Relaxation phenomena in dense glassy polymer membranes. Enschede: Universiteit Twente.