A mechanically strong, flexible and conductive film based on bacterial cellulose/graphene nanocomposite

Yiyu Feng; Xuequan Zhang; Yongtao Shen; Katsumi Yoshino; Wei Feng

doi:10.1016/j.carbpol.2011.08.039

A mechanically strong, flexible and conductive film based on bacterial cellulose/graphene nanocomposite

Carbohydr Polym. 2012 Jan 4;87(1):644-649. doi: 10.1016/j.carbpol.2011.08.039. Epub 2011 Aug 22.

Authors

Yiyu Feng¹, Xuequan Zhang¹, Yongtao Shen¹, Katsumi Yoshino², Wei Feng³

Affiliations

¹ School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China.
² Shimane Institute for Industrial Technology, Hokuryo-cho, Matsue, Shimane 690-0816, Japan.
³ School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China; Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China. Electronic address: weifeng@tju.edu.cn.

PMID: 34663016
DOI: 10.1016/j.carbpol.2011.08.039

Abstract

A highly flexible nanocomposite film of bacterial cellulose (BC) and graphene oxide (GO) with a layered structure was presented using the vacuum-assisted self-assembly technique. Microscopic and X-ray diffraction measurements demonstrated that the GO nanosheets were uniformly dispersed in the BC matrix. The interactions between BC and GO were studied by Fourier transformation infrared spectroscopy. Compared with pristine BC, the integration of 5wt% GO resulted in 10% and 20% increase in Young's modulus and tensile strength of the composite film. The electrical conductivity of the composite film containing 1wt% GO after in situ reduction showed a remarkable increase by 6 orders of magnitude compared with the insulated BC.

Keywords: Bacterial cellulose; Conductivity; Flexible; Graphene oxide.