In-situ synthesis and characterization of electrically conductive polypyrrole/graphene nanocomposites

Bose, Saswata and Kuila, Tapas and Uddin, Md. Elias and Kim, Nam Hoon and Lau, Alan K. T. and Lee, Joong Hee (2010) In-situ synthesis and characterization of electrically conductive polypyrrole/graphene nanocomposites. Polymer, 51 (25). pp. 5921-5928. ISSN 0032-3861

Abstract

Polypyrrole (PPy)/graphene (GR) nanocomposites were successfully prepared via in-situ polymerization of graphite oxide (GO) and pyrrole monomer followed by chemical reduction using hydrazine monohydrate. The large surface area and high aspect ratio of the in-situ generated graphene played an important role in justifying the noticeable improvements in electrical conductivity of the prepared composites via chemical reduction. X-ray photoelectron spectroscopy (XPS) analysis revealed the removal of oxygen functionality from the GO surface after reduction and the bonding structure of the reduced composites were further determined from FTIR and Raman spectroscopic analysis. For PPy/GR composite, intensity ratio between D band and G band was high (w1.17), indicating an increased number of c-sp2 domains that were formed during the reduction process. A reasonable improvement in thermal stability of the reduced composite was also observed. Transmission electron microscopy (TEM) observations indicated the dispersion of the graphene nanosheets within the PPy matrix.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held.
Depositing User: Professor Alan Lau
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 11 Dec 2010 10:20
Last Modified: 03 Jul 2013 00:07
Uncontrolled Keywords: graphene nanosheets; nanocomposites; polypyrrole
Fields of Research (FOR2008): 09 Engineering > 0906 Electrical and Electronic Engineering > 090603 Industrial Electronics
10 Technology > 1007 Nanotechnology > 100705 Nanoelectronics
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi: 10.1016/j.polymer.2010.10.014
URI: http://eprints.usq.edu.au/id/eprint/9109

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