ICCAS OpenIR
Novel hydrophilic-hydrophobic multiblock copolyimides as proton exchange membranes: Enhancing the proton conductivity
Li, Nanwen1,2; Liu, Jia1; Cui, Zhiming2; Zhang, Suobo1; Xing, Wei
2009-09-10
Source PublicationPOLYMER
ISSN0032-3861
Volume50Issue:19Pages:4505-4511
AbstractA series of novel multiblock copolymers based on sulfonated copolyimides were developed and evaluated for use as proton exchange membranes (PEMs). In these multiblock copolyimides, the hydrophilic blocks were composed of the sulfonated dianhydride and the sulfonated diamine, with sulfonic acid groups on every aromatic ring (i.e., fully sulfonated). This molecular design was implemented to effectively enhance the proton conductivity. The properties of the multiblock copolyimides with varying IEC values or block lengths were investigated to obtain a better understanding of the relationship between molecular structure and properties of proton exchange membranes. The water uptake and proton conductivity were found to be highly dependent upon their structure. The block copolymers displayed significantly higher proton conductivities, especially at low relative humidity than the random copolymers with a similar IEC. The results indicated that the distribution of sulfonic acid and the length of the blocks play a key role on properties of proton exchange membranes. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordMultiblock Copolymers Sulfonated Polyimides Proton Exchange Membranes
DOI10.1016/j.polymer.2009.07.039
Indexed BySCI
Language英语
WOS IDWOS:000272959200013
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67250
Collection中国科学院化学研究所
Corresponding AuthorZhang, Suobo
Affiliation1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Li, Nanwen,Liu, Jia,Cui, Zhiming,et al. Novel hydrophilic-hydrophobic multiblock copolyimides as proton exchange membranes: Enhancing the proton conductivity[J]. POLYMER,2009,50(19):4505-4511.
APA Li, Nanwen,Liu, Jia,Cui, Zhiming,Zhang, Suobo,&Xing, Wei.(2009).Novel hydrophilic-hydrophobic multiblock copolyimides as proton exchange membranes: Enhancing the proton conductivity.POLYMER,50(19),4505-4511.
MLA Li, Nanwen,et al."Novel hydrophilic-hydrophobic multiblock copolyimides as proton exchange membranes: Enhancing the proton conductivity".POLYMER 50.19(2009):4505-4511.
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