Magnetoelectric investigations on poly(vinylidene fluoride)/NiFe<sub>2</sub>O<sub>4</sub>flexible films fabricated through a solution casting method

Prabhakaran, T.; Hemalatha, J.

doi:10.1039/c6ra18032a

Cited by 54 publications

(21 citation statements)

References 38 publications

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“…The J-E curve resembles a buttery loop which is an obvious characteristic loop of a ferroelectric material. 44 The current density for neat PVDF at À10 V cm À1 is $0.5 nA cm À2 , and with the addition of MWCNTs and APTES-functionalized MWCNTs the current densities reduced to $0.3 and $0.2 nA cm À2 . This result indicated that the addition of MWCNTs and MWCNT-APTES NPs into the PVDF matrix reduced the leakage current.…”

Section: Electrical Propertiesmentioning

confidence: 99%

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Chandran

Mural

2022

Sustainable Energy Fuels

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Section: Electrical Propertiesmentioning

confidence: 99%

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Chandran

Mural

2022

Sustainable Energy Fuels

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“…A number of preparation methods have been reported for PVDF-based nanocomposites films using magnetic nanoparticles, such as PVDF-BiFeO 3 [26], PVDF-CoFe2O4 [27,28], PVDF-NaNbO 3 -Ni [12], PVDF-HFP/clay/NF [29], and PVDF-NiFe 2 O 4 [30,31], using either a solution casting, hot press, or electrospinning to improve the magneto-electric coupling. In those studies, enhancements in magneto-electric coupling and dielectric constant with the increase in filler nanoparticles were reported.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and magnetoelectric investigation of flexible PVDF-TrFE/cobalt ferrite nanocomposite films

Sapkota

Hasan

Martin

et al. 2022

Mater. Res. Express

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Flexible nanocomposite films, with cobalt ferrite nanoparticles (CFN) as the ferromagnetic component and polyvinylidene fluoride–trifluoroethylene (PVDF-TrFE) copolymer as the ferroelectric matrix, were fabricated using a blade coating technique. Nanocomposite films were prepared using a two-step process; the first process involves the synthesis of cobalt ferrite (CoFe2O4) nanoparticles using a sonochemical method, and then incorporation of various weight percentages (0, 2.5, 5, and 10%) of cobalt ferrite nanoparticles into the PVDF-TrFE to form nanocomposites. The ferroelectric polar β phase of PVDF-TrFE was confirmed by X-ray diffraction (XRD). Thermal studies of films showed notable improvement in the thermal properties of the nanocomposite films with the incorporation of nanoparticles. The ferroelectric properties of the pure polymer/composite films were studied, showing a significant improvement of maximum polarization upon 5wt% CFN loading in PVDF-TrFE composite films compared to the PVDF-TrFE film. The magnetic properties of as-synthesized CFN and the polymer nanocomposites were studied, showing a magnetic saturation of 53.7 emu/gat room temperature, while 10% cobalt ferrite-(PVDF-TrFE) nanocomposite shows 27.6 emu/g. We also describe a process for fabricating high optical quality pure PVDF-TrFE and pinhole-free nanocomposite films. Finally, the mechanical studies revealed that the mechanical strength of the films increases up to 5 wt.% loading of the nanoparticles in the copolymer matrix and then decreases. This signifies that the obtained films could be suited for flexible electronics.

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“…PVDF-TiO 2 nanocomposites have been developed [10] for application in separation membranes, which showed enhanced fouling resistance. Ferrimagnetic NiFe 2 O 4 nanoparticles were added to PVDF [11] in order to obtain composites, combining the ferroelectric and piezoelectric properties of PVDF and the magnetic properties of NiFe 2 O 4 . The addition of NiFe 2 O 4 nanoparticles resulted in enhanced formation of ferroelectric β phase of PVDF [12].…”

Section: Introductionmentioning

confidence: 99%

Versatile Strategy for Electrophoretic Deposition of Polyvinylidene Fluoride-Metal Oxide Nanocomposites

et al. 2021

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Polyvinylidene fluoride (PVDF) is an advanced functional polymer which exhibits excellent chemical and thermal stability, and good mechanical, piezoelectric and ferroelectic properties. This work opens a new strategy for the fabrication of nanocomposites, combining the functional properties of PVDF and advanced inorganic nanomaterials. Electrophoretic deposition (EPD) has been developed for the fabrication of films containing PVDF and nanoparticles of TiO2, MnO2 and NiFe2O4. An important finding was the feasibility of EPD of electrically neutral PVDF and inorganic nanoparticles using caffeic acid (CA) and catechol violet (CV) as co-dispersants. The experiments revealed strong adsorption of CA and CV on PVDF and inorganic nanoparticles, which involved different mechanisms and facilitated particle dispersion, charging and deposition. The analysis of the deposition yield data, chemical structure of the dispersants and the microstructure and composition of the films provided an insight into the adsorption and dispersion mechanisms and the influence of deposition conditions on the deposition rate, film microstructure and composition. PVDF films provided the corrosion protection of stainless steel. Overcoming the limitations of other techniques, this investigation demonstrates a conceptually new approach for the fabrication of PVDF-NiFe2O4 films, which showed superparamagnetic properties. The approach developed in this investigation offers versatile strategies for the EPD of advanced organic-inorganic nanocomposites.

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Magnetoelectric investigations on poly(vinylidene fluoride)/NiFe₂O₄flexible films fabricated through a solution casting method

Abstract: Here we report magnetoelectric cross-coupling in poly(vinylidene fluoride)/NiFe2O4 flexible films and their polarization values, which are highly dependent on the percentage of ferroelectric β phase present.

Cited by 54 publications

References 38 publications

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Fabrication and magnetoelectric investigation of flexible PVDF-TrFE/cobalt ferrite nanocomposite films

Versatile Strategy for Electrophoretic Deposition of Polyvinylidene Fluoride-Metal Oxide Nanocomposites

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Magnetoelectric investigations on poly(vinylidene fluoride)/NiFe2O4flexible films fabricated through a solution casting method

Abstract: Here we report magnetoelectric cross-coupling in poly(vinylidene fluoride)/NiFe2O4 flexible films and their polarization values, which are highly dependent on the percentage of ferroelectric β phase present.

Cited by 54 publications

References 38 publications

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Fabrication and magnetoelectric investigation of flexible PVDF-TrFE/cobalt ferrite nanocomposite films

Versatile Strategy for Electrophoretic Deposition of Polyvinylidene Fluoride-Metal Oxide Nanocomposites

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Magnetoelectric investigations on poly(vinylidene fluoride)/NiFe₂O₄flexible films fabricated through a solution casting method