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http://dx.doi.org/10.4313/JKEM.2013.26.8.620

Fabrication of CNT/PVDF Composite Film and Its Electrical Properties  

Lee, Sunwoo (Department of Electrical Information, Inha Technical College)
Jung, Nak-Chun (Department of Electrical Engineering, Inha University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.26, no.8, 2013 , pp. 620-623 More about this Journal
Abstract
The carbon nanotube / poly-vinylidene fluoride (CNT/PVDF) composite films for the nano-generator devices were fabricated by spray coating method using the CNT/PVDF solution, which was prepared by adding PVDF pellets into the CNT dispersed N-Methyl-2-pyrroli-done (NMP) solution. The flexible CNT/PVDF composite films were investigated by the scanning electron microscopy, which revealed that the CNTs were uniformly dispersed in the PVDF matrix and thickness of the films was approximately $20{\mu}m$. Fourier transform infra-red spectra were used to investigate crystal structure of the as-spray-coated CNT/PVDF films, and we found that they revealed extremely large portion of the ${\beta}$ phase PVDF. The capacitance of the CNT/PVDF films increased by adding CNTs into the PVDF matrix, and finally saturated. However, the resistance didn't show any saturation effect in the CNT concentration range of 0~4 wt%. Finally, the resulting nano-generator devices revealed reasonable current output after given mechanical stress.
Keywords
CNT/PVDF composite film; Spray coating method; Piezoelectricity; Electrical property;
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