4,4′-Oxydianiline (ODA) containing sulfonated polyimide/protic ionic liquid composite membranes for anhydrous proton conduction

Content Provider	Semantic Scholar
Author	Chen, Bor-Kuan Wu, Tzi-Yi Kuo, Chung-Wen Peng, Yu-Chun Shih, I-Chao
Copyright Year	2013
Abstract	Abstract The aim of this study was to utilize ionic liquids (ILs) in preparation of modified sulfonated polyimide (SPI) composite membranes to substantially increase the conductivity of proton exchange membranes (PEMs). Protic ILs used included 1-vinylimidazolium trifluoromethanesulfonate [ImVH][OTf] and 1-methyl-imidazolium trifluoromethanesulfonate [ImMH][OTf]. SPIs are synthesized from diamine, 2,2-bis[4-(4-amino-phenoxy)phenyl]propane (BAPP), sulfonated diamine, 4,4′-diamino diphenyl ether-2,2′-disulfonic acid (ODADS), and an aromatic anhydride, ODPA (4,4′-oxy diphthalic anhydride). ODADS improves conductivity, while BAPP enhances the mechanical and thermal properties of SPIs. We have prepared SPI/IL composite PEM using 50 wt.% [ImVH][OTf] with a high conductivity of 3–6 mS/cm at 120 °C and anhydrous condition depending on the ODADS content. [ImVH][OTf] offered better conductivity, which can be attributed to its chemical structure that has a vinyl group attached to an imidazolium ring to provide lower melting temperature and lattice energy, thereby increasing conductivity.
Starting Page	11321
Ending Page	11330
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1016/j.ijhydene.2013.06.053
Alternate Webpage(s)	http://ir.lib.kuas.edu.tw/bitstream/987654321/10999/2/chemical-3.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.ijhydene.2013.06.053
Volume Number	38
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article