Sulfonated naphthalenic polyimides containing ether and ketone linkages as polymer electrolyte membranes
- Title
- Sulfonated naphthalenic polyimides containing ether and ketone linkages as polymer electrolyte membranes
- Author
- Michael D. Guiver
- Keywords
- Sulfonation; Polyimides; Polymer electrolyte membranes; Polymer electrolyte; Fuel cells.
- Issue Date
- 2011-01
- Publisher
- Elsevier B.V.
- Citation
- In Journal of Membrane Science 2011 366(1):73-81
- Abstract
- Two series of sulfonated naphthalenic polyimides containing ether and ketone linkages (SPI-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-aminophenoxy]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?2.03×10?7cm2/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 (IEC).
- URI
- http://www.sciencedirect.com/science/article/pii/S0376738810007246?via%3Dihubhttp://hdl.handle.net/20.500.11754/66006
- ISSN
- 0376-7388
- DOI
- 10.1016/j.memsci.2010.09.027
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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