K. P. Pramoda and H. Hussain contributed equally to this work.
Covalent bonded polymer–graphene nanocomposites
Article first published online: 24 AUG 2010
Copyright © 2010 Wiley Periodicals, Inc.
Journal of Polymer Science Part A: Polymer Chemistry
Volume 48, Issue 19, pages 4262–4267, 1 October 2010
How to Cite
Pramoda, K. P., Hussain, H., Koh, H.M., Tan, H. R. and He, C. B. (2010), Covalent bonded polymer–graphene nanocomposites. J. Polym. Sci. A Polym. Chem., 48: 4262–4267. doi: 10.1002/pola.24212
- Issue published online: 24 AUG 2010
- Article first published online: 24 AUG 2010
- Manuscript Accepted: 27 JUN 2010
- Manuscript Received: 22 APR 2010
- Institute of Materials Research and Engineering (IMRE)
- Agency for Science, Technology, and Research (A*STAR)
- thermal properties
This report describes a new route to covalently bonded polymer–graphene nanocomposites and the subsequent enhancement in thermal and mechanical properties of the resultant nanocomposites. At first, the graphite is oxidized by the modified Hummers method followed by functionalization with Octadecylamine (ODA). The ODA functionalized graphite oxides are reacted with methacryloyl chloride to incorporate polymerizable CC functionality at the nanographene platelet surfaces, which were subsequently employed in in situ polymerization of methylmethacrylate to obtain covalently bonded poly(methyl methacrylate) (PMMA)–graphene nanocomposites. The obtained nanocomposites show significant enhancement in thermal and mechanical properties compared with neat PMMA. Thus, even with 0.5 wt % graphene nanosheets, the Tg increased from 119 °C for neat PMMA to 131 °C for PMMA–graphene nanocomposite, and the respective storage modulus increased from 1.29 to 2 GPa. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 4262–4267, 2010