Abstract
Results of broadband (20 Hz-1 MHz) dielectric spectroscopy of multi-wall carbon nanotubes/polymethylmethacrylate composites with low loading of the carbon fillers (up to 0.5 wt%) are reported. The temperature behaviour of complex dielectric permittivity of MWCNT/PMMA composites with 0.25 wt % is similar to the pure PMMA polymer. However, the dielectric permittivity and electric conductivity of composites with 0.5 wt% are very high and both parameters are almost temperature independent. The high complex dielectric permittivity of these composites indicates the onset of percolation threshold. The relaxation time of β relaxation is shorter in MWCNT/PMMA composites than in pure PMMA.
Original language | English |
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Pages (from-to) | 2814-2816 |
Number of pages | 3 |
Journal | Physica Status Solidi (C) Current Topics in Solid State Physics |
Volume | 6 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Jan 2009 |