Development of self-poled PVDF/MWNT flexible nanocomposites with a boosted electroactive β-phase

2020 ◽  
Vol 44 (34) ◽  
pp. 14578-14591
Author(s):  
Akash M. Chandran ◽  
S. Varun ◽  
Prasanna Kumar S. Mural
Keyword(s):  
Vinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Nanocomposite Films ◽  
Fabrication Method ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
Dielectric And Piezoelectric Properties

In the present study, we report a simple fabrication method for poly(vinylidene fluoride) PVDF/MWCNT flexible nanocomposite films with a boosted electroactive phase that enhanced the dielectric and piezoelectric properties.

High dielectric poly(vinylidene fluoride) nanocomposite films with MoS2 using polyaniline interlinker via interfacial interaction

2017 ◽  
Vol 5 (46) ◽  
pp. 12121-12133 ◽  
Author(s):  
Nirmal Maity ◽  
Amit Mandal ◽  
Arun K. Nandi
Keyword(s):  
Dielectric Constant ◽  
Molybdenum Disulfide ◽  
Vinylidene Fluoride ◽  
Interfacial Interaction ◽  
Nanocomposite Films ◽  
Good Dispersion ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

Aniline in situ polymerized within exfoliated molybdenum disulfide produces MoS2–PANI with raspberry morphology, showing good dispersion into poly(vinylidene fluoride)(PVDF) and produces 86% β-phase PVDF yielding dielectric constant 586 at 102 Hz.

scholarly journals Facile preparation of highly oriented poly(vinylidene fluoride) uniform films and their ferro- and piezoelectric properties

RSC Advances ◽  
2017 ◽  
Vol 7 (28) ◽  
pp. 17038-17043 ◽  
Author(s):  
Fan Xu ◽  
Kaili Zhang ◽  
Ying Zhou ◽  
Zhichao Qu ◽  
Haijun Wang ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Phase Content ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
Facile Preparation

The shear-induced PVDF films present preferentially orientation with a high β-phase content and exhibit excellent ferro- and piezoelectric properties.

Cationic Surfactant Assisted Enhancement of Dielectric and Piezoelectric Properties of PVDF nanofibers for Energy Harvesting Application

Soft Matter ◽  
2021 ◽  
Author(s):  
Govind Shreenivas Ekbote ◽  
Mohammed Khalifa ◽  
Arunjunairaj Mahendran ◽  
Srinivasan Anandhan
Keyword(s):  
Energy Harvesting ◽  
Cationic Surfactant ◽  
Vinylidene Fluoride ◽  
Piezoelectric Properties ◽  
Wide Range ◽  
Poly Vinylidene Fluoride ◽  
Dielectric And Piezoelectric Properties ◽  
Surfactant Assisted

Poly(vinylidene fluoride) (PVDF) is among the most versatile polymers due to its wide range of properties, including dielectric, piezoelectric and ferroelectric. However, more frequently than not a range of processing...

High Efficient and Continuous Triboelectric Power Harvesting based on Porous β-phase Poly (vinylidene fluoride) Aerogel

2021 ◽  
Author(s):  
Minmin Wang ◽  
Weiqun Liu ◽  
Xu Shi ◽  
Jinyang Pan ◽  
Bing Zhou ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
High Electron ◽  
Exchange Method ◽  
Power Harvesting ◽  
Β Phase ◽  
Output Performance ◽  
High Electron Affinity ◽  
High Efficient ◽  
Poly Vinylidene Fluoride ◽  
High Output

Non-additive β-phase porous poly (vinylidene fluoride) (PVDF) aerogel with high electron affinity is successfully prepared through simple solvent exchange method. The as-prepared additive-free PVDF aerogel shows high output performance used...

scholarly journals Comparative Study of PVDF Sheets and Their Sensitivity to Mechanical Vibrations: The Role of Dimensions, Molecular Weight, Stretching and Poling

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1637
Author(s):  
Miroslav Mrlík ◽  
Josef Osička ◽  
Martin Cvek ◽  
Markéta Ilčíková ◽  
Peter Srnec ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Comparative Study ◽  
Vinylidene Fluoride ◽  
Initial Thickness ◽  
Complementary Method ◽  
Β Phase ◽  
Vibration Sensing ◽  
Poly Vinylidene Fluoride ◽  
Processing Techniques ◽  
The Comparative Study

This paper is focused on the comparative study of the vibration sensing capabilities of poly(vinylidene fluoride) (PVDF) sheets. The main parameters such as molecular weight, initial sample thickness, stretching and poling were systematically applied, and their impact on sensing behavior was examined. The mechanical properties of prepared sheets were investigated via tensile testing on the samples with various initial thicknesses. The transformation of the α-phase to the electro-active β-phase was analyzed using FTIR after applying stretching and poling procedures as crucial post-processing techniques. As a complementary method, the XRD was applied, and it confirmed the crystallinity data resulting from the FTIR analysis. The highest degree of phase transformation was found in the PVDF sheet with a moderate molecular weight (Mw of 275 kDa) after being subjected to the highest axial elongation (500%); in this case, the β-phase content reached approximately 90%. Finally, the vibration sensing capability was systematically determined, and all the mentioned processing/molecular parameters were taken into consideration. The whole range of the elongations (from 50 to 500%) applied on the PVDF sheets with an Mw of 180 and 275 kDa and an initial thickness of 0.5 mm appeared to be sufficient for vibration sensing purposes, showing a d33 piezoelectric charge coefficient from 7 pC N−1 to 9.9 pC N−1. In terms of the d33, the PVDF sheets were suitable regardless of their Mw only after applying the elongation of 500%. Among all the investigated samples, those with an initial thickness of 1.0 mm did not seem to be suitable for vibration sensing purposes.

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