Structuring and characterization of a novel highly microporous PEI/BMI semi-interpenetrating polymer network

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DOIResolve DOI: http://doi.org/10.1016/j.polymer.2005.06.057
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TypeArticle
Journal titlePolymer
Volume46
Issue18
Pages69106922; # of pages: 13
SubjectSemi-IPN; BMI; PEI
AbstractSyntheses of semi-interpenetrating polymer networks (semi-IPNs) with polyetherimide/bismaleimide (PEI/BMI) chromophore composites showing molecular sieve characteristics are reported. A tunable and compatible chemical structure with fine morphology was obtained through in situ controlled sol-gel polymerization, crosslinking, chemical modification and membrane fabrication. The novel semi-IPN synthesized and assembled using ethanol as polar protic modifier and pore former, had superior structure and morphology for making gas separation membranes. These semi-IPN membranes gave 15 times higher gas flux than those membranes prepared from pure PEI without significant decrease in gas selectivity. The chemical structures of these novel semi-IPNs were elucidated by FTIR, XPS and SEM. It appears that in situ simultaneous ethoxylation, anionic polymerization of BMI and imide modifications were responsible for creating the new chemical structure and molecular morphology that was different from traditional BMI resins. In addition, these chemical processes give superior structures using green chemistry techniques such as ambient temperature reaction and polymerization without initiators.
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada (NRC-CNRC)
Peer reviewedNo
NRC number47852
NPARC number8909896
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Record identifiera66f8432-1fe4-4c22-8530-33ca6d0962e1
Record created2009-04-22
Record modified2016-05-09
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