Preparation of chitosan/graphene oxide composite film with enhanced mechanical strength in the wet state

被引:506
作者
Han, Donglin
Yan, Lifeng [1 ]
Chen, Wufeng
Li, Wan
机构
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
基金
中国国家自然科学基金;
关键词
Chitosan; Graphene oxide; Composite film; Strength; FUNCTIONALIZED GRAPHENE; POLYMER NANOCOMPOSITES; THERMAL-EXPANSION; GRAPHITE OXIDE; REDUCTION;
D O I
10.1016/j.carbpol.2010.08.038
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Chitosan/graphene oxide composite films have been prepared by the mixing aqueous solution of chitosan and graphene oxide in the present of diluted acetic acid The structure thermal stability and mechanical properties of the composite films have been investigated by the wide-angle X-ray diffraction Fourier transform infrared spectroscopy scanning electron microscopy atomic force microscopy thermogravimetry analysis and mechanical test The results obtained from those different studies revealed that chitosan and graphene oxide could mix with each other homogeneously and the mechanical properties of the as-prepared films were improved significantly over that of the pure chitosan film especially at wet state The tensile strength of the film of chitosan/graphene oxide (5 1 w/w) is 1 7 times higher than that of the pure chitosan film at dry state while it is 3 times higher at wet state In addition the composite films also showed a high storage modulus up to 200 C The composite films have potential application as biomaterials or packing materials (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码:653 / 658
页数:6
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