Intrinsically microporous soluble polyimides incorporating Tröger’s Basefor membrane gas separation

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DOIResolve DOI: http://doi.org/10.1021/ma5007073
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TypeArticle
Journal titleMacromolecules
Volume47
Issue10
Pages32543262; # of pages: 9
AbstractPolyimides with intrinsic microporosity were readily prepared by introducing Tröger’s base (TB) into the polymer backbone via polymerization between imide-containing diamines and dimethoxymethane (DMM). Two imide-containing diamines were prepared by reaction of 2,5-dimethyl-1,4-phenylenediamine (DPD) with 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA). The resulting polyimides were readily soluble in common organic solvents, had good mechanical properties, with tensile strength in the range of 59–64 MPa and elongation at break of 5–17%, good thermal stability and extremely high glass transition temperatures (Tgs), up to 425 °C. The polyimides with incorporated TB units had high fractional free volume (FFV ≥ 0.215) resulting from poor chain-packing and exhibited significant microporosity and good gas transport properties. The novel polymer architecture in this study extends the development of polyimides with intrinsic microporosity for membrane-based gas separation.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; Energy, Mining and Environment
Peer reviewedYes
NRC numberNRC-EME-55659
NPARC number21272074
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Record identifier438adbef-85f3-43f1-83e4-fbf1c05d0c5f
Record created2014-06-18
Record modified2016-05-09
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