%0 Journal Article %T Sulfonated polyimides containing pyridine groups as proton exchange membrane materials %A Lei, Rui %A Kang, Chuan-qing %A Huang, Yun-jie %A Qiu, Xue-peng %A Ji, Xiang-ling %A Xing, Wei %A Gao, Lian-xun %J Chinese Journal of Polymer Science %V 29 %N 5 %P 532-539 %@ 0256-7679 %D 2011-09-01 %I Chinese Chemical Society and Institute of Chemistry, CAS %~ DeepDyve