Sulphonated naphthalenic poilyimides containing ether and ketone linkages as polymer electrolyte membranes

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DOIResolve DOI: http://doi.org/10.1016/j.memsci.2010.09.027
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TypeArticle
Journal titleJournal of Membrane Science
Volume366
Issue1
Pages7381; # of pages: 9
SubjectSulfonation; Polyimides; Polymer electrolyte membranes; Polymer electrolyte; Fuel cells
AbstractTwo series of sulfonated naphthalenic polyimides containing ether and ketone linkages (SKI-KK-X and SPI-K-X) were prepared by a one-pot polymerization reaction of sulfonated diamine monomers, 1,4-bis[3-sodium sulfonate-4-(4-aminophenoxy)benzoyl]benzene or 4,4-bis[3-sodium sulfonate-4-aminophenoxyl]benzophenone, with 4,4-diaminodiphenyl ether and 1,4,5,8-naphthalenetetracarboxylic dianhydride. The membranes cast from the resulting polymers had good thermal and oxidative stability, dimensional stability and mechanical properties. At 80 C, the proton conductivities of several samples, including SPI-KK-1, SPI-K-1 and SPI-K-2 were higher than 0.10S/cm, which were comparable to that of Nafion. Methanol permeabilities of the obtained polymer electrolyte membranes (PEMs) were in the range of 1.43-2.03 x 10-7 cm2/s, which were several times lower than that of Nafion 117. It is interesting to note that the SPI-KK-X series, having a more rigid phenyl-ketone-phenyl-ketone-phenyl moiety, had a lower dimensional swelling ratio and lower methanol permeability in comparison with the corresponding SPI-K-X series at the same level of ion exchange capacity.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52203
NPARC number16438623
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Record identifier183ae31d-c35c-4398-acd8-e5a549e29051
Record created2010-12-02
Record modified2016-05-10
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