Poling and annealing of piezoelectric Poly(Vinylidene fluoride) micropillar arrays

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Abstract

This work reports on the effect of calcination and poling processes on the crystalline phase and piezoresponse of poly(vinylidene fluoride) (PVDF) micropillar arrays. PVDF micropillars were prepared by the imprinting method, heated and treated with high-voltage poling. The effect of the treatment conditions on the crystallization behaviour and the piezoelectric properties of the patterned PVDF films was investigated by piezoresponse force microscopy (PFM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). DSC data show that poling of the PVDF micropillars increases the crystallinity of the polymer from 12% to 22.7%. FTIR measurements of PVDF films show that the calcination and poling processes affect the γ to β phase transformation. In the imprinted and annealed samples, the γ phase was predominant (58% and 46%, respectively). For the poled samples, up to 42% of the β phase was found. Piezoelectric measurements using PFM showed that the poled PVDF micropillars possess a much higher piezoelectric coefficient (29 pm/V) compared to the annealed sample (10 pm/V). The piezoresponse of the PVDF micropillar arrays is thus substantially enhanced by poling.

Original languageEnglish
Article number122035
JournalMaterials Chemistry and Physics
Volume239
DOIs
Publication statusPublished - 1 Jan 2020

Fingerprint

vinylidene
Calcination
Fourier transform infrared spectroscopy
fluorides
Differential scanning calorimetry
Microscopic examination
Annealing
annealing
Crystallization
Phase transitions
Crystalline materials
Electric potential
roasting
Polymers
heat measurement
infrared spectroscopy
microscopy
scanning
polyvinylidene fluoride
phase transformations

Keywords

  • Electroactive phase
  • Micropillar array
  • Piezoelectric polymer
  • poly(vinylidene fluoride)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{9a765797ac0f44fe9c55430e8b7a51ab,
title = "Poling and annealing of piezoelectric Poly(Vinylidene fluoride) micropillar arrays",
abstract = "This work reports on the effect of calcination and poling processes on the crystalline phase and piezoresponse of poly(vinylidene fluoride) (PVDF) micropillar arrays. PVDF micropillars were prepared by the imprinting method, heated and treated with high-voltage poling. The effect of the treatment conditions on the crystallization behaviour and the piezoelectric properties of the patterned PVDF films was investigated by piezoresponse force microscopy (PFM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). DSC data show that poling of the PVDF micropillars increases the crystallinity of the polymer from 12{\%} to 22.7{\%}. FTIR measurements of PVDF films show that the calcination and poling processes affect the γ to β phase transformation. In the imprinted and annealed samples, the γ phase was predominant (58{\%} and 46{\%}, respectively). For the poled samples, up to 42{\%} of the β phase was found. Piezoelectric measurements using PFM showed that the poled PVDF micropillars possess a much higher piezoelectric coefficient (29 pm/V) compared to the annealed sample (10 pm/V). The piezoresponse of the PVDF micropillar arrays is thus substantially enhanced by poling.",
keywords = "Electroactive phase, Micropillar array, Piezoelectric polymer, poly(vinylidene fluoride)",
author = "Pariy, {I. O.} and Ivanova, {A. A.} and Shvartsman, {V. V.} and Lupascu, {D. C.} and Sukhorukov, {G. B.} and Surmeneva, {M. A.} and Surmenev, {R. A.}",
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TY - JOUR

T1 - Poling and annealing of piezoelectric Poly(Vinylidene fluoride) micropillar arrays

AU - Pariy, I. O.

AU - Ivanova, A. A.

AU - Shvartsman, V. V.

AU - Lupascu, D. C.

AU - Sukhorukov, G. B.

AU - Surmeneva, M. A.

AU - Surmenev, R. A.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - This work reports on the effect of calcination and poling processes on the crystalline phase and piezoresponse of poly(vinylidene fluoride) (PVDF) micropillar arrays. PVDF micropillars were prepared by the imprinting method, heated and treated with high-voltage poling. The effect of the treatment conditions on the crystallization behaviour and the piezoelectric properties of the patterned PVDF films was investigated by piezoresponse force microscopy (PFM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). DSC data show that poling of the PVDF micropillars increases the crystallinity of the polymer from 12% to 22.7%. FTIR measurements of PVDF films show that the calcination and poling processes affect the γ to β phase transformation. In the imprinted and annealed samples, the γ phase was predominant (58% and 46%, respectively). For the poled samples, up to 42% of the β phase was found. Piezoelectric measurements using PFM showed that the poled PVDF micropillars possess a much higher piezoelectric coefficient (29 pm/V) compared to the annealed sample (10 pm/V). The piezoresponse of the PVDF micropillar arrays is thus substantially enhanced by poling.

AB - This work reports on the effect of calcination and poling processes on the crystalline phase and piezoresponse of poly(vinylidene fluoride) (PVDF) micropillar arrays. PVDF micropillars were prepared by the imprinting method, heated and treated with high-voltage poling. The effect of the treatment conditions on the crystallization behaviour and the piezoelectric properties of the patterned PVDF films was investigated by piezoresponse force microscopy (PFM), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). DSC data show that poling of the PVDF micropillars increases the crystallinity of the polymer from 12% to 22.7%. FTIR measurements of PVDF films show that the calcination and poling processes affect the γ to β phase transformation. In the imprinted and annealed samples, the γ phase was predominant (58% and 46%, respectively). For the poled samples, up to 42% of the β phase was found. Piezoelectric measurements using PFM showed that the poled PVDF micropillars possess a much higher piezoelectric coefficient (29 pm/V) compared to the annealed sample (10 pm/V). The piezoresponse of the PVDF micropillar arrays is thus substantially enhanced by poling.

KW - Electroactive phase

KW - Micropillar array

KW - Piezoelectric polymer

KW - poly(vinylidene fluoride)

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