期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 1379-1385出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.09.085
关键词
Chitosan; Silica-coated carbon nano tubes; Proton exchange membrane; Dispersion
资金
- fund of National Natural Science Foundation of China [51403058, 51303048, 31371750]
- Hubei Province Natural Science Foundation [2014CFB580]
- Hubei Provincial Department of Education [T201216]
- Hubei Co-Innovation Center for Utilization of Biomass Waste
- Faculty of Chemistry and Material Science, Hubei Engineering University
Silica-coated carbon nanotubes (SCNTs), which were obtained by a simple sol-gel method, were utilized in preparation of chitosan/SCNTs (CS/SCNTs) composite membranes. The thermal and oxidative stability, morphology, mechanical properties, water uptake and proton conductivity of CS/SCNTs composite membranes were investigated. The insulated and hydrophilic silica layer coated on CNTs eliminates the risk of electronic short-circuiting and enhances the interaction between SCNTs and chitosan to ensure the homogenous dispersion of SCNTs, although the water uptake of CS/SCNTs membranes is reduced owing to the decrease of the effective number of the amino functional groups of chitosan. The CS/SCNTs composite membranes are superior to the pure CS membrane in thermal and oxidative stability, mechanical properties and proton conductivity. The results of this study suggest that CS/SCNTs composite membranes exhibit promising potential for practical application in proton exchange membranes. (C) 2015 Elsevier Ltd. All rights reserved.
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