Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films
Poly(vinylidene fluoride) (PVDF) and its copolymers exhibit excellent piezoelectric properties and are potential materials for high efficiency energy harvesting devices. In this study, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films are prepared by the solution casting method. The...
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doaj-acd339d5ec3a4281aee897fa122d31e92021-10-03T07:42:40ZengDe GruyterNanotechnology Reviews2191-90972021-08-011011009101710.1515/ntrev-2021-0070Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric filmsJin Zhaonan0Lei Dan1Wang Yang2Wu Liangke3Hu Ning4College of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing 400044, ChinaPoly(vinylidene fluoride) (PVDF) and its copolymers exhibit excellent piezoelectric properties and are potential materials for high efficiency energy harvesting devices. In this study, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films are prepared by the solution casting method. The prepared film is then subjected to mechanical stretching and poling process. By adjusting the temperature of the poling process and the elongation ratio of the mechanical stretching process, the relative content of β-phase F(β) increases significantly, leading to high piezoelectric performance. The maximum output voltage of the PVDF-HFP films poled at 40°C reaches 3.67 V, 71% higher than that of the films poled at room temperature. Fourier transform infrared spectroscopy analysis (FTIR), XRD (X-ray diffraction), and differential scanning calorimetry are used to investigate the influences of mechanical stretching and poling process on the crystal structure to discover the enhancement mechanism. This work provides a straightforward and low-cost route to prepare high piezoelectric PVDF-HFP-based materials.https://doi.org/10.1515/ntrev-2021-0070pvdf-hfpstretchingpolingpiezoelectricity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jin Zhaonan Lei Dan Wang Yang Wu Liangke Hu Ning |
spellingShingle |
Jin Zhaonan Lei Dan Wang Yang Wu Liangke Hu Ning Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films Nanotechnology Reviews pvdf-hfp stretching poling piezoelectricity |
author_facet |
Jin Zhaonan Lei Dan Wang Yang Wu Liangke Hu Ning |
author_sort |
Jin Zhaonan |
title |
Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films |
title_short |
Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films |
title_full |
Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films |
title_fullStr |
Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films |
title_full_unstemmed |
Influences of poling temperature and elongation ratio on PVDF-HFP piezoelectric films |
title_sort |
influences of poling temperature and elongation ratio on pvdf-hfp piezoelectric films |
publisher |
De Gruyter |
series |
Nanotechnology Reviews |
issn |
2191-9097 |
publishDate |
2021-08-01 |
description |
Poly(vinylidene fluoride) (PVDF) and its copolymers exhibit excellent piezoelectric properties and are potential materials for high efficiency energy harvesting devices. In this study, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films are prepared by the solution casting method. The prepared film is then subjected to mechanical stretching and poling process. By adjusting the temperature of the poling process and the elongation ratio of the mechanical stretching process, the relative content of β-phase F(β) increases significantly, leading to high piezoelectric performance. The maximum output voltage of the PVDF-HFP films poled at 40°C reaches 3.67 V, 71% higher than that of the films poled at room temperature. Fourier transform infrared spectroscopy analysis (FTIR), XRD (X-ray diffraction), and differential scanning calorimetry are used to investigate the influences of mechanical stretching and poling process on the crystal structure to discover the enhancement mechanism. This work provides a straightforward and low-cost route to prepare high piezoelectric PVDF-HFP-based materials. |
topic |
pvdf-hfp stretching poling piezoelectricity |
url |
https://doi.org/10.1515/ntrev-2021-0070 |
work_keys_str_mv |
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1716845909733539840 |