1. Electrically conductive and mechanically strong biomimetic chitosan/reduced graphene oxide composite films
- Author
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Zhiyi Yao, Gaoquan Shi, Hua Bai, Anran Liu, and Xiluan Wang
- Subjects
chemistry.chemical_classification ,Materials science ,Graphene ,Composite number ,Oxide ,General Chemistry ,Polymer ,Conductivity ,law.invention ,Chitosan ,chemistry.chemical_compound ,chemistry ,law ,Ultimate tensile strength ,Materials Chemistry ,Composite material ,Dispersion (chemistry) - Abstract
Composite films of chitosan and reduced graphene oxide (RGO) sheets with nacre-like layered structure have been prepared by vacuum filtration of the stable aqueous mixture of both components. The film containing 6 wt% RGO is electrically conductive with a conductivity of 1.2 S m−1. Furthermore, it is mechanically strong and ductile; its Young's modulus, tensile strength and elongation at break were measured to be 6.3 ± 0.2 GPa, 206 ± 6 MPa and 6.5 ± 0.6%, respectively. These values partly exceed those of nacre. The high mechanical and electrical properties of chitosan/RGO composite films are mainly attributed to the uniform dispersion of RGO nanofillers in the polymer matrices to form a compact layered structure.
- Published
- 2010
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