• 文献标题:   One-Step In Situ Biosynthesis of Graphene Oxide-Bacterial Cellulose Nanocomposite Hydrogels
  • 文献类型:   Article
  • 作  者:   SI HJ, LUO HL, XIONG GY, YANG ZW, RAMAN SR, GUO RS, WAN YZ
  • 作者关键词:   cellulose, hydrogel, nanocomposite, tissue engineering
  • 出版物名称:   MACROMOLECULAR RAPID COMMUNICATIONS
  • ISSN:   1022-1336 EI 1521-3927
  • 通讯作者地址:   East China Jiaotong Univ
  • 被引频次:   57
  • DOI:   10.1002/marc.201400239
  • 出版年:   2014

▎ 摘  要

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.