The effect of acetylation on the crystallinity of BC/CNTs nanocomposite
Article first published online: 14 NOV 2011
Copyright © 2011 Society of Chemical Industry
Journal of Chemical Technology and Biotechnology
Volume 87, Issue 3, pages 431–435, March 2012
How to Cite
Adnan, S. and Radiah Awang Biak, D. (2012), The effect of acetylation on the crystallinity of BC/CNTs nanocomposite. J. Chem. Technol. Biotechnol., 87: 431–435. doi: 10.1002/jctb.2748
- Issue published online: 6 FEB 2012
- Article first published online: 14 NOV 2011
- Manuscript Accepted: 13 SEP 2011
- Manuscript Received: 10 AUG 2011
- nano biocomposite;
- carbon nanotubes;
BACKGROUND: Bacterial cellulose (BC) synthesized by Acetobacter xylinum has been shown to be a potential matrix for impregnating carbon nanotubes (CNTs) to produce bacterial cellulose/carbon nanotubes (BC/CNTs) nanocomposite. The objective of this study was to investigate the crystal structure of BC/CNTs nanocomposite after acetylation treatment. Approximately 0.05 w/v% CNTs were added onto continuously developed BC. Then, the BC/CNTs nanocomposite was acetylated heterogeneously.
RESULTS: The crystallinity characteristic of formed BC/CNTs acetate was analyzed using an X-ray diffractometer (XRD). The crystallization index (CrI) of BC/CNTs acetate was better than BC acetate, i.e. 97:3 and 93:7, respectively. The crystallite size of BC microfibrils in BC/CNTs sheet was reduced because of the impregnated CNTs. However, the reduction of crystallite size for BC/CNTs acetate was lower than that of BC acetate showing that the existence of CNTs within BC micofibrils had protected the BC crystal structure from further destruction by acetylating agent.
CONCLUSION: CNTs is a powerful substance that acted as a void filler between BC crystalline structure and protected the nano-biocomposite from total degradation by the acetylation process. Copyright © 2011 Society of Chemical Industry