TY - JOUR
T1 - End-group cross-linked polybenzimidazole blend membranes for high temperature proton exchange membrane
AU - Li, Mingyu
AU - Zhang, Gang
AU - Zuo, Huiping
AU - Han, Miaomiao
AU - Zhao, Chengji
AU - Jiang, Hao
AU - Liu, Zhongguo
AU - Zhang, Liyuan
AU - Na, Hui
N1 - Funding Information:
This work was supported by the National Nature Science Foundation of China (Grant no. 21074044 and 51101073 ) and Special Fund for Basic Scientific Research of Central Colleges (No. 201103088 ) and Doctoral Program of Higher Education of China (No. 20110061120019 ).
PY - 2012/12/15
Y1 - 2012/12/15
N2 - A cross-linked network is obtained by an end-group cross-linkable PBI (E-PBI) and 4,4'-diglycidyl (3,3',5,5'-tetramethylbiphenyl) epoxy resin (TMBP). The formation of the network is proved by FT-IR and gel fraction test. Then, high temperature proton exchange membranes are constructed by incorporating the cross-linked network into poly(2,2'-(1,3-phenylene)-5,5'-bibenzimidazole) (m-PBI). The influences of the end-group cross-linked network on the properties of membranes are studied, such as, phosphonate acid doping ability, thermal stability, mechanical property, oxidative stability and proton conductivity. The E-PBI/TMBP in the membranes contributes to the improvement of acid doping ability, proton conductivity, mechanical properties and oxidative stabilities. The blend membranes with 20-90. wt% E-PBI/TMBP show higher proton conductivity than pristine PBI at 120 °C-180 °C. These results indicate that the end-group cross-linked blend membranes are promising materials as high temperature proton exchange membranes.
AB - A cross-linked network is obtained by an end-group cross-linkable PBI (E-PBI) and 4,4'-diglycidyl (3,3',5,5'-tetramethylbiphenyl) epoxy resin (TMBP). The formation of the network is proved by FT-IR and gel fraction test. Then, high temperature proton exchange membranes are constructed by incorporating the cross-linked network into poly(2,2'-(1,3-phenylene)-5,5'-bibenzimidazole) (m-PBI). The influences of the end-group cross-linked network on the properties of membranes are studied, such as, phosphonate acid doping ability, thermal stability, mechanical property, oxidative stability and proton conductivity. The E-PBI/TMBP in the membranes contributes to the improvement of acid doping ability, proton conductivity, mechanical properties and oxidative stabilities. The blend membranes with 20-90. wt% E-PBI/TMBP show higher proton conductivity than pristine PBI at 120 °C-180 °C. These results indicate that the end-group cross-linked blend membranes are promising materials as high temperature proton exchange membranes.
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U2 - 10.1016/j.memsci.2012.08.058
DO - 10.1016/j.memsci.2012.08.058
M3 - Article
AN - SCOPUS:84867746666
SN - 0376-7388
VL - 423-424
SP - 495
EP - 502
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -