High-Electric-Field-Induced Hierarchical Structure Change of Poly(vinylidene fluoride) as Studied by the Simultaneous Time-Resolved WAXD/SAXS/FTIR Measurements and Computer Simulations

2021 ◽  
Vol 54 (5) ◽  
pp. 2334-2352
Author(s):  
Kohji Tashiro ◽  
Hiroko Yamamoto ◽  
Sreenivas Kummara ◽  
Tomohiko Takahama ◽  
Kouki Aoyama ◽  
...  
Keyword(s):  
Electric Field ◽  
Computer Simulations ◽  
Hierarchical Structure ◽  
Vinylidene Fluoride ◽  
Structure Change ◽  
High Electric Field ◽  
Time Resolved ◽  
Poly Vinylidene Fluoride

Rotation of polar axis of β-form poly(vinylidene fluoride) under high electric field

1984 ◽  
Vol 57 (1) ◽  
pp. 139-149 ◽  
Author(s):  
Ken'ichi Nakamura ◽  
Yoshikichi Teramoto ◽  
Naohiro Murayama
Keyword(s):  
Electric Field ◽  
Vinylidene Fluoride ◽  
Polar Axis ◽  
High Electric Field ◽  
Poly Vinylidene Fluoride

scholarly journals Preparation of efficient piezoelectric PVDF–HFP/Ni composite films by high electric field poling

2022 ◽  
Vol 11 (1) ◽  
pp. 452-462
Author(s):  
Dan Lei ◽  
Ning Hu ◽  
Liangke Wu ◽  
Rongyi Huang ◽  
Alamusi Lee ◽  
...  
Keyword(s):  
Electric Field ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
High Electric Field ◽  
Ni Nanoparticles ◽  
Scanning Calorimetry ◽  
Uniaxial Stretching ◽  
Poly Vinylidene Fluoride ◽  
Electric Field Poling ◽  
Pure Pvdf

Abstract Poly(vinylidene fluoride) (PVDF) and its copolymers have been widely studied due to their excellent piezoelectricity and ferroelectricity. In this study, composite films are prepared by adding Ni nanoparticles (0.00–0.3 wt%) into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF–HFP) matrix by solution casting, uniaxial stretching, and high electric field poling. It is found that when the maximum electric field E max for poling is 130 MV m−1, the calibrated open circuit voltage of the pure PVDF–HFP films reaches 3.12 V, which is much higher than those poled by a lower electric field (70 MV m−1: 1.40 V; 90 MV m−1: 2.29 V). This result shows that the effect of poling on the generated output voltage is decisive. By adding 0.1 wt% Ni nanoparticles, it increases to 3.84 V, 23% higher than that of the pure PVDF–HFP films. To further understand the enhancement mechanism, the effects of Ni nanoparticles on initial crystallization, uniaxial stretching, and high electric field poling are investigated by X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy, and differential scanning calorimetry.

Preparation and electrical properties of γ form poly(vinylidene fluoride) thin film by vapour deposition in the presence of an electric field

1991 ◽  
Vol 202 (2) ◽  
pp. 213-220 ◽  
Author(s):  
Akiyoshi Takeno ◽  
Norimasa Okui ◽  
Tetsuji Kitoh ◽  
Michiharu Muraoka ◽  
Susumu Umemoto ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrical Properties ◽  
Electric Field ◽  
Vapour Deposition ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride
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