Research Article
Piezoelectric and Dielectric Characterization of MWCNT-Based Nanocomposite Flexible Films
Table 2
Variation of percolation threshold with the variation in aspect ratio of the electrically conductive inclusion (CNTs).
| | Electrically conductive filler (aspect ratio (AR)) | Composite (fabrication method) | Percolation (volume fraction %) |
| | MWCNT (AR = 400) [72] | MWCNT-PVDF (sol-gel and hot molding) | 1.0% | | MWCNT (AR~100) [72] | MWCNT-PMMMA (compression molding) | 2.4% | | SWCNT (AR~100) [34] | SWCNT-PMMA (compression molding) | 3.4% | | SWCNT (AR~1000) [73] | SWCNT-PZT-PMMA (solution casting) | 0.8% | | CNT (AR~100) [74] | CNT-Alumina (colloidal processing) | 2.2% | | MWCNT (AR~100) [75] | MWCNT-Epoxy (sol-gel sintering) | 2–2.75% | | Double-walled CNTs (AR > 1000) [76] | CNT-Epoxy (vacuum sintering) | 0.25% | | MWCNT (AR > 100) [60] | MWCNT-Epoxy (sol-gel sintering) | 2.5% | | CNT (AR~200–1000) [77] | CNT-Epoxy (sol-gel sintering) | 0.5–1.5% | | MWCNT (AR~1000) [78] | MWCNT-Epoxy (sol-gel sintering) | 0.8% | | MWCNT (AR~500–2000) [79] | Carbonized MWCNT/resorcinol-formaldehyde xerogels (sol-gel polymerization) | 1.6–3.18% | | MWCNT (AR~62) [80] | MWCNT/thermoplastic elastomer (melt blending) | 9.0% | | MWCNT (AR~116) [80] | MWCNT/thermoplastic elastomer (melt blending) | 10% | | MWCNT (AR~437) [80] | MWCNT/thermoplastic elastomer (melt blending) | 3.5% |
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