Unleashing the piezoelectric potential of PVDF: a study on phase transformation from gamma (γ) to beta (β) phase through thermal contact poling

Morali, Alban; Mandal, Arijit; Skorobogatiy, Maksim; Bodkhe, Sampada

doi:10.1039/d3ra05068h

Cited by 5 publications

(2 citation statements)

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“…The γ+β content was calculated also by using eq due to having a common peak at 840 cm –1 for both γ and β phases. Morali et al used the same equation to calculate γ+β content . According to Cai et al, an additional characteristic peak at 1233 cm –1 has to be monitored to distinguish the γ phase .…”

Section: Resultsmentioning

confidence: 99%

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β Phase Optimization of Solvent Cast PVDF as a Function of the Processing Method and Additive Content

Yasar,

Hassett,

Murphy

et al. 2024

ACS Omega

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A semicrystalline polymer with high piezo-, pyro-, and ferroelectric characteristics, poly(vinylidene fluoride) (PVDF) offers exciting possibilities in various applications. The semicrystalline structure of PVDF is composed of several phases including α, β, θ, γ, and ε phases. β phase polymorphs of PVDF exhibit the highest piezoelectric properties, which can be enhanced through different processing methods. This study aims to investigate the β phase transformation of PVDF through different processes/treatment methods and the processing of a PVDF polymer composite containing 0.2 wt % multiwalled carbon nanotubes and/or 20 wt % modified/unmodified barium titanate. The effects of annealing, uniaxial stretching, rolling, atmospheric plasma treatment, UV treatment, and their combinations were investigated. The transformation of α to β phase was determined by Fourier transform infrared spectrometer, X-ray diffractometer and differential scanning calorimeter. The most remarkable β phase transformation of PVDF films was obtained by stretching following solvent casting and hot pressing. It was observed that various process combinations, as well as the incorporation of additives, influence the β phase content of PVDF. Alongside studying β phase content of PVDF, the investigation extends to analyzing the tan δ and elastic and loss modulus values of rolled PVDF polymer composite films.

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Section: Resultsmentioning

confidence: 99%

“…Morali et al used the same equation to calculate γ+β content. 39 According to Cai et al, an additional characteristic peak at 1233 cm –1 has to be monitored to distinguish the γ phase. 40 Thus, β phase or γ+β phase can be quantified.…”

Section: Resultsmentioning

confidence: 99%

β Phase Optimization of Solvent Cast PVDF as a Function of the Processing Method and Additive Content

Yasar,

Hassett,

Murphy

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

Versatile Lamellar Wrap-Structured PVDF/PZT/CNTs Piezoelectric Sensor for Road Traffic Information Sensing, Monitoring, and Energy Harvesting

Liang,

Wang,

et al. 2024

Chemical Engineering Journal

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Carbon fiber/boron nitride fillers for enhancing through-plane thermal conductivity of poly(vinylidene fluoride): Synergistic effect and mechanism

Yi,

Li,

Henderson

et al. 2024

Composites Communications

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Unleashing the piezoelectric potential of PVDF: a study on phase transformation from gamma (γ) to beta (β) phase through thermal contact poling

Abstract: This novel work provides a step-by-step procedure to enhance piezoelectricity by studying the previously unresearched PVDF's γ- to β-phase transformation.

Cited by 5 publications

References 54 publications

β Phase Optimization of Solvent Cast PVDF as a Function of the Processing Method and Additive Content

β Phase Optimization of Solvent Cast PVDF as a Function of the Processing Method and Additive Content

Versatile Lamellar Wrap-Structured PVDF/PZT/CNTs Piezoelectric Sensor for Road Traffic Information Sensing, Monitoring, and Energy Harvesting

Carbon fiber/boron nitride fillers for enhancing through-plane thermal conductivity of poly(vinylidene fluoride): Synergistic effect and mechanism

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