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Journal of Nanomaterials
Volume 2017, Article ID 2697382, 7 pages
https://doi.org/10.1155/2017/2697382
Research Article

Influence of MWCNTs on β-Phase PVDF and Triboelectric Properties

1Materials Science and Engineering, University of California San Diego, La Jolla, CA 92093, USA
2Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92093, USA
3Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA

Correspondence should be addressed to Michael J. Heller; ude.dscu@rellehm

Received 20 March 2017; Accepted 7 May 2017; Published 16 July 2017

Academic Editor: Victor M. Castaño

Copyright © 2017 Sejung Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The surface of multiwalled carbon nanotubes (MWCNTs) was chemically modified using 1-pyrenebutyric acid (PBA) to improve its compatibility with polyvinylidene fluoride (PVDF). The carboxylic acid groups of the MWCNTs-PBA (PCNTs) provide a β-phase nucleation site to the fluorine of PVDF along their surface. The content of the β-phase crystalline structure of PVDF was found to be the highest at a concentration of 1.0 wt.% of PCNTs, and these PVDF-PCNTs composites were utilized as active layers in triboelectric devices. The maximum output voltage achieved was 16 volts at a concentration of 1.0 wt.% of PCNTs in the PVDF composites.