Dielectric, ferroelectric and magnetoelectric investigations of SrFe12O19-embedded PVDF-HFP nanocomposite fiber mats for flexible electronic applications

Magnetoelectric (ME) polymer nanocomposites find a wide range of applications as ME sensors, energy storage devices, magneto‐mechano‐electric nanogenerators, tissue engineering scaffolds, and so forth. Functionalizing ferrite fillers is an effective strategy to improve the ferrite‐polymer interaction and, thereby, the functional properties. In the present work, we developed ternary nanocomposite fibers of polyvinylidene fluoride loaded with hydrated salt and alginate functionalized ferrite nanoparticles. Nanocomposites with functionalized ferrite fillers were found to have better dielectric and ME properties. The highest values of dielectric constant (14.7) and ME coupling coefficient (18.2 mV cm−1 Oe−1) were obtained for ternary nanocomposite fiber with functionalized nickel ferrite nanoparticles. The present study opens new avenues for developing flexible ME nanocomposites for realizing flexible ME nanocomposites with the required properties for developing next‐generation devices for diverse applications.

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“…The mechanical properties of the samples are tabulated in Table 3. The values are in accordance with the values found in the literature 47 …”

Section: Resultssupporting

confidence: 92%

“…The values are in accordance with the values found in the literature. 47 This may be due to the organic-inorganic interactions between the polymer and the functionalized fillers forming a network structure. 48 in turn results in enhancement of elongation at break values as well as the tensile strength of the nanocomposite.…”

Section: Mechanical Studiesmentioning

confidence: 99%

Alginate functionalized MFe₂O₄ (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Bhadrapriya

Rahul²,

Raneesh³

et al. 2023

Polymers for Advanced Techs

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“…It has also been reported previously that the successful loading of cellulose and ferrites can significantly influence the dielectric properties of the polymer matrix. − The uniform dispersion of magnetic LFO nanoparticles and cellulose in the polymer matrix increases the interfacial area between the polymer and the filler, resulting in improved interfacial polarization. The increase in the dielectric constant can be attributed to the microcapacitor arrangement formed in the polymer filler interfaces of the nanocomposite. , A similar trend in the dielectric constant has been observed in ferrite-loaded PVDF systems. , In the nanocomposite PML-8, containing 8 wt % of LFO, the dielectric constant value peaked in the range of 23 at 1 kHz. Zyane et al reported a comparative study on the dielectric properties of the binary and ternary composites based on vinylic resin, BaTiO 3 , and MCC, which substantiate the influence of MCC in the enhanced dielectric properties and its efficiency in replacing ceramic filler, thereby reducing the wt % of ceramic filler in the composite …”

Section: Resultssupporting

confidence: 54%

“…56,57 A similar trend in the dielectric constant has been observed in ferrite-loaded PVDF systems. 58,59 In the nanocomposite PML-8, containing 8 wt % of LFO, the dielectric constant value peaked in the range of 23 at 1 kHz. Zyane et al reported a comparative study on the dielectric properties of the binary and ternary composites based on vinylic resin, BaTiO 3 , and MCC, which substantiate the influence of MCC in the enhanced dielectric properties and its efficiency in replacing ceramic filler, thereby reducing the wt % of ceramic filler in the composite.…”

Section: Dielectric Studiesmentioning

confidence: 99%

Ternary Fiber Mats of PVDF-HFP/Cellulose/LiFe₅O₈ Nanoparticles with Enhanced Electric, Magnetoelectric, and Antibacterial Properties: A Promising Approach for Magnetic and Electric Field-Responsive Antibacterial Coatings

Chacko,

Balakrishnan,

Kalarikkal

et al. 2024

ACS Appl. Polym. Mater.

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In this study, a flexible, lightweight, and multifunctional ternary nanocomposite fiber system, comprising poly-(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), microcrystalline cellulose (MCC), and LiFe 5 O 8 (LFO) nanoparticles, and exhibiting a magnetoelectric coupling property alongside antibacterial traits, is reported. The engineered composite system with magnetoelectric and antibacterial properties is an optimal candidate for field-mediated antibacterial coating surfaces. The enhancement in the electroactive phase in the polymer nanocomposite systems has been studied using various techniques, and a maximum of polar phase ∼95% is achieved for 8 wt % of the LFO-loaded composite fiber system. The composite fiber system shows remarkable enhancement in the dielectric constant, and the maximum value of the magnetoelectric coupling coefficient (MECC) reached 20.3 mV/cm Oe for 8 wt % of the LFO-loaded sample. Ferroelectric properties have also been investigated to ensure the enhancement of the electroactive phase. The antibacterial efficiency of the prepared fiber mats was studied using the minimal inhibitory concentration (MIC) method. This unique combination of magnetoelectric coupling and antibacterial properties provides a transformative solution for self-sustaining antibacterial coating surfaces that are also electric and magnetic field-tuned.

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High Output, Biocompatible, Fully Flexible Fiber‐Based Magneto‐Mechano‐Electric Generator for Standalone‐Powered Electronics

Ram,

Pabba,

Kaarthik

et al. 2024

Advanced Sustainable Systems

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Harvesting magnetic noise fields around power cables emerges as an attractive approach due to its potential as a renewable and ubiquitous energy source for powering wireless sensor networks (WSNs) in IoT applications, miniature electronics, and implantable medical devices. Flexible polymer‐based magneto‐mechano‐electric (MME) generators gain attention for their effectiveness in magnetic energy harvesting owing to their durability and flexibility. In this study, a lead‐free, flexible MME generator is developed by using Polyvinylidene fluoride (PVDF)‐Aluminium nitride (AlN)‐nanofiber composites fabricated via electrospinning with different AlN compositions and integrated with a magnetostrictive Metglas layer that offers self‐bias characteristics. The MME generator is modeled using COMSOL Multiphysics to analyze the magnetic flux density distribution over the Metglas surface and the piezoelectric effect of the nanofiber composites, with the simulation results aligning well with the experimental data. The optimized, flexible MME generator, incorporating 15 wt.% of AlN in the PVDF/Metglas composite, achieves an open‐circuit voltage of 18.5 V and a power density of 0.93 mW‐cm−3 when exposed to an Alternating Current (AC) magnetic noise field of 6 Oe at a resonance frequency of 50 Hz. The generated power is sufficient to operate LEDs and sensor. This newly developed lead‐free, flexible MME generator shows significant promise for advanced applications in self‐powered WSNs.

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Dielectric, ferroelectric and magnetoelectric investigations of SrFe12O19-embedded PVDF-HFP nanocomposite fiber mats for flexible electronic applications

Cited by 6 publications

References 52 publications

Alginate functionalized MFe₂O₄ (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Alginate functionalized MFe₂O₄ (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Ternary Fiber Mats of PVDF-HFP/Cellulose/LiFe₅O₈ Nanoparticles with Enhanced Electric, Magnetoelectric, and Antibacterial Properties: A Promising Approach for Magnetic and Electric Field-Responsive Antibacterial Coatings

High Output, Biocompatible, Fully Flexible Fiber‐Based Magneto‐Mechano‐Electric Generator for Standalone‐Powered Electronics

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Dielectric, ferroelectric and magnetoelectric investigations of SrFe12O19-embedded PVDF-HFP nanocomposite fiber mats for flexible electronic applications

Cited by 6 publications

References 52 publications

Alginate functionalized MFe2O4 (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Alginate functionalized MFe2O4 (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Ternary Fiber Mats of PVDF-HFP/Cellulose/LiFe5O8 Nanoparticles with Enhanced Electric, Magnetoelectric, and Antibacterial Properties: A Promising Approach for Magnetic and Electric Field-Responsive Antibacterial Coatings

High Output, Biocompatible, Fully Flexible Fiber‐Based Magneto‐Mechano‐Electric Generator for Standalone‐Powered Electronics

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Product

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Alginate functionalized MFe₂O₄ (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Alginate functionalized MFe₂O₄ (MNi, Co) nanoparticles and hydrated salt incorporated flexible PVDF ternary nanocomposite fibers for magnetoelectric applications

Ternary Fiber Mats of PVDF-HFP/Cellulose/LiFe₅O₈ Nanoparticles with Enhanced Electric, Magnetoelectric, and Antibacterial Properties: A Promising Approach for Magnetic and Electric Field-Responsive Antibacterial Coatings