Preparation of novel sulfonated block copolyimides for proton conductivity membranes

Polymers for Advanced TechnologiesVolume 16, Issue 10 p. 753-757 Short Communication Preparation of novel sulfonated block copolyimides for proton conductivity membranes Takahiko Nakano, Takahiko Nakano Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanSearch for more papers by this authorShoji Nagaoka, Shoji Nagaoka Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanSearch for more papers by this authorHiroyoshi Kawakami, Corresponding Author Hiroyoshi Kawakami [email protected] Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanDeptartment of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan.Search for more papers by this author Takahiko Nakano, Takahiko Nakano Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanSearch for more papers by this authorShoji Nagaoka, Shoji Nagaoka Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanSearch for more papers by this authorHiroyoshi Kawakami, Corresponding Author Hiroyoshi Kawakami [email protected] Department of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, JapanDeptartment of Applied Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan.Search for more papers by this author First published: 17 October 2005 https://doi.org/10.1002/pat.650Citations: 55AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract In this article novel sulfonated block copolyimides with various diamine compositions and block chain lengths were synthesized by chemical imidization using a two-pot procedure. The proton conductivities of the block copolyimide membranes were measured as functions of the relative humidity and temperature using four-point-probe electrochemical impedance spectroscopy. The proton conductivity of the membranes strongly depended on the block chain lengths and increased with an increase in the block chain lengths. The proton conductivity of NTDA-BDSA-b-6FAP (112/48) as the block copolyimide membrane was approximately 0.35 S cm−1 which indicated a higher value when compared to that determined for Nafion®. Copyright © 2005 John Wiley & Sons, Ltd. Citing Literature Volume16, Issue10October 2005Pages 753-757 RelatedInformation