One-Step In Situ Biosynthesis of Graphene Oxide-Bacterial Cellulose Nanocomposite Hydrogels

Graphene oxide–bacterial cellulose (GO/BC) nanocomposite hydrogels with well‐dispersed GO in the network of BC are successfully developed using a facile one‐step in situ biosynthesis by adding GO suspension into the culture medium of BC. During the biosynthesis process, the crystallinity index of BC...

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Bibliographic Details
Published in:Macromolecular rapid communications. 2014-10, Vol.35 (19), p.1706-1711
Main Authors: Si, Hongjuan, Luo, Honglin, Xiong, Guangyao, Yang, Zhiwei, Raman, Sudha R., Guo, Ruisong, Wan, Yizao
Format: Article
Language:English
Subjects:
Applied sciences
Bacteria - metabolism
Biosynthesis
Cellulose
Cellulose - chemistry
Cellulose - metabolism
Composites
Culture
Exact sciences and technology
Forms of application and semi-finished materials
Graphene
Graphite - chemistry
Graphite - metabolism
Hydrogels
Microscopy, Electron, Scanning
Microscopy, Electron, Transmission
Nanocomposites
Nanostructure
Networks
Oxides - chemistry
Particulate composites
Polymer industry, paints, wood
Technology of polymers
tissue engineering
X-Ray Diffraction
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Summary:Graphene oxide–bacterial cellulose (GO/BC) nanocomposite hydrogels with well‐dispersed GO in the network of BC are successfully developed using a facile one‐step in situ biosynthesis by adding GO suspension into the culture medium of BC. During the biosynthesis process, the crystallinity index of BC decreases and GO is partially reduced. The experimental results indicate that GO nanosheets are uniformly dispersed and well‐bound to the BC matrix and that the 3D porous structure of BC is sustained. This is responsible for efficient load transfer between the GO reinforcement and BC matrix. Compared with the pure BC, the tensile strength and Young's modulus of the GO/BC nanocomposite hydrogel containing 0.48 wt% GO are significantly improved by about 38 and 120%, respectively. The GO/BC nanocomposite hydrogels are promising as a new material for tissue engineering scaffolds. Graphene oxide–bacterial cellulose (GO/BC) nanocomposite hydrogels with well‐dispersed GO in the network of BC have been successfully developed using a facile one‐step in situ biosynthesis by adding GO suspension into the culture medium of BC. The composites show a significant increase in tensile properties at relatively low GO loadings.
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.201400239