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Characterization of Solution-Processed Double-Walled Carbon Nanotube/Poly(vinylidene fluoride) Nanocomposites

✍ Scribed by Atheer Almasri; Zoubeida Ounaies; Yeon Seok Kim; Jaime Grunlan

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
310 KB
Volume
293
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Dispersion of CNTs in polymers can yield impressive property enhancements at low volume fractions, thus maintaining the inherent processability of the polymer. In particular, they can improve the electromechanical response of piezoelectric polymers by lowering the actuation voltage and increasing strain and stress response. In this work, piezoelectric PVDF and DWNTs are solution‐cast into films. SEM of fracture surfaces confirms good dispersion, and electrical conductivity measurements reveal a low percolation threshold (0.23 vol.‐%). The effect of CNTs on storage modulus, T~c~, T~m~ and T~g~ of PVDF is studied. Electromechanical strain is observed at low actuation voltages, possibly due to enhanced local electric field in the presence of DWNTs.

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