Synthesis, characterization, and gas permeation properties of a novel group of polymers with intrinsic microporosity: PIM-polyimides

Bader S. Ghanem, Neil B. McKeown, Peter M. Budd, Nasser M. Al-Harbi, Detlev Fritsch, Kathleen Heinrich, Ludmila Starannikova, Andrei Tokarev, Yuri Yampolskii

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A range of polyimides with characteristics similar to a polymer of intrinsic microporosity (PIM) were prepared by reaction with various aromatic diamines of a bis(carboxylic anhydride) incorporating a spiro-center. The polymers exhibited high surface area, as determined by nitrogen adsorption, and high thermal stability. Membrane gas permeation experiments showed PIM-polyimides to be among the most permeable of all polyimides and to have selectivities close to the upper bound for several important gas pairs. A group contribution method was used to predict permeability coefficients and separation factors for further PIM-polyimide structures, revealing worthwhile targets for future synthetic efforts. © 2009 American Chemical Society.
    Original languageEnglish
    Pages (from-to)7881-7888
    Number of pages7
    JournalMacromolecules
    Volume42
    Issue number20
    DOIs
    Publication statusPublished - 27 Oct 2009

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