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Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing

Piezoelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers fabricated by electrospinning have drawn increasing levels of attention in the fields of flexible sensors and nanogenerators. However, the directional dependence of piezoelectricity of electrospun nanofibers remains e...

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Detalles Bibliográficos
Autores principales: Jiang, Yonggang, Gong, Longlong, Hu, Xiaohe, Zhao, Yong, Chen, Huawei, Feng, Lin, Zhang, Deyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414850/
https://www.ncbi.nlm.nih.gov/pubmed/30966399
http://dx.doi.org/10.3390/polym10040364
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author Jiang, Yonggang
Gong, Longlong
Hu, Xiaohe
Zhao, Yong
Chen, Huawei
Feng, Lin
Zhang, Deyuan
author_facet Jiang, Yonggang
Gong, Longlong
Hu, Xiaohe
Zhao, Yong
Chen, Huawei
Feng, Lin
Zhang, Deyuan
author_sort Jiang, Yonggang
collection PubMed
description Piezoelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers fabricated by electrospinning have drawn increasing levels of attention in the fields of flexible sensors and nanogenerators. However, the directional dependence of piezoelectricity of electrospun nanofibers remains elusive. In this study, the piezoelectric performances of individual nanofibers are characterized by piezoresponse force microscopy (PFM), while the effects of annealing on β-phase crystallinities are investigated by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The experimental results reveal that the as-spun P(VDF-TrFE) nanofibers form higher content of β-phase compared with spin-coated films, and the content of β-phase increases by annealing. The annealed P(VDF-TrFE) nanofiber exhibits distinct vertical polarization switching characteristics. The high piezoelectric output in the thickness direction and low piezoelectric output in the longitudinal direction of the nanofiber mats further confirm that the preferential dipole orientation of electrospun P(VDF-TrFE) nanofibers is normal to the surface of the substrate. Highly aligned P(VDF-TrFE) nanofibers show directional strain sensing ability due to the piezoelectric and mechanical anisotropy.
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spelling pubmed-64148502019-04-02 Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing Jiang, Yonggang Gong, Longlong Hu, Xiaohe Zhao, Yong Chen, Huawei Feng, Lin Zhang, Deyuan Polymers (Basel) Article Piezoelectric poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) nanofibers fabricated by electrospinning have drawn increasing levels of attention in the fields of flexible sensors and nanogenerators. However, the directional dependence of piezoelectricity of electrospun nanofibers remains elusive. In this study, the piezoelectric performances of individual nanofibers are characterized by piezoresponse force microscopy (PFM), while the effects of annealing on β-phase crystallinities are investigated by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The experimental results reveal that the as-spun P(VDF-TrFE) nanofibers form higher content of β-phase compared with spin-coated films, and the content of β-phase increases by annealing. The annealed P(VDF-TrFE) nanofiber exhibits distinct vertical polarization switching characteristics. The high piezoelectric output in the thickness direction and low piezoelectric output in the longitudinal direction of the nanofiber mats further confirm that the preferential dipole orientation of electrospun P(VDF-TrFE) nanofibers is normal to the surface of the substrate. Highly aligned P(VDF-TrFE) nanofibers show directional strain sensing ability due to the piezoelectric and mechanical anisotropy. MDPI 2018-03-25 /pmc/articles/PMC6414850/ /pubmed/30966399 http://dx.doi.org/10.3390/polym10040364 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Yonggang
Gong, Longlong
Hu, Xiaohe
Zhao, Yong
Chen, Huawei
Feng, Lin
Zhang, Deyuan
Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title_full Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title_fullStr Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title_full_unstemmed Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title_short Aligned P(VDF-TrFE) Nanofibers for Enhanced Piezoelectric Directional Strain Sensing
title_sort aligned p(vdf-trfe) nanofibers for enhanced piezoelectric directional strain sensing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414850/
https://www.ncbi.nlm.nih.gov/pubmed/30966399
http://dx.doi.org/10.3390/polym10040364
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