MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites: Effect of loading on the conduction properties and its percolation threshold

Abd Razak, Saiful Izwan; Sharif Zein, Sharif Hussein; Ahmad, Abdul Latif

Abstract

This paper reports the synthesis and characterization of ternary nanocomposites consisting of polyaniline (PANI), multiwalled carbon nanotubes (MWCNTs) and manganese dioxide (MnO2) at different MWCNT–MnO2 loadings. The composite electrical percolation threshold is investigated as well. The in situ nanocomposites were characterized by UV-visible, Fourier transform and Raman spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy, and electrical conductivity measurements. The conductivity of the nanocomposite reached up to 78.79 Scm-1 with 50 wt.% addition of MWCNT–MnO2 with good conduction stability and reversibility. The percolation threshold of this nanocomposite was achieved at 0.5 wt.%. Using the scaling law of the percolation theory, it was found that the theoretical conductivity of the nanocomposite exhibited an exponential factor, (t) of 1.38 instead of the universal t value of 2.

Citation

Abd Razak, S. I., Sharif Zein, S. H., & Ahmad, A. L. (2011). MnO2-filled multiwalled carbon nanotube/polyaniline nanocomposites: Effect of loading on the conduction properties and its percolation threshold. Nano, 06(01), 81-91. https://doi.org/10.1142/S1793292011002378

• Journal Article Type: Article
• Acceptance Date: Dec 14, 2010
• Online Publication Date: Nov 21, 2011
• Publication Date: 2011-02
• Deposit Date: Jul 10, 2020
• Journal: Nano
• Print ISSN: 1793-2920
• Electronic ISSN: 1793-7094
• Publisher: World Scientific Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 06
• Issue: 01
• Pages: 81-91
• DOI: https://doi.org/10.1142/S1793292011002378
• Keywords: Polyaniline; Electrical conductivity; Carbon; Nanocomposite; Percolation
• Public URL: https://hull-repository.worktribe.com/output/3538532
• Publisher URL: https://www.worldscientific.com/doi/abs/10.1142/S1793292011002378