Investigation of electrical and thermal properties of poly (vinylidene fluoride)/strontium hexaferrite polymer composites

Khatua, Deeptimayee; Padhy, Minakshi; Singh, Rajesh; Choudhary, R. N. P.; Achary, P. Ganga Raju

doi:10.1007/s10854-020-04794-6

Cited by 6 publications

(5 citation statements)

References 32 publications

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“…Because of more loosely attached π bonds, it gets polarized easily and increases the dielectric constant value more than the other oligoesters [72] . From the results, the EMDOP can be used to prepare passive components like resistors, capacitors and so on [73] . At low frequencies, oligoesters exhibit higher dielectric loss and vice versa at higher frequencies indicating that the oligoesters can be appropriate for electro‐optical device application [74] …”

Section: Resultsmentioning

confidence: 99%

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Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection

et al. 2023

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Azine‐based monomer and its three oligoesters were synthesized, characterized with IR, UV, GC‐MS, GPC, 1H NMR, 13C{1H} NMR, 31P NMR and applied to chemosensor applications. In the chemosensor study, fluorophores show selective and sensitive responses with Fe2+ ions in the DMF/H2O solution (1 : 1, pH: 7.4, fluorophore: 5 μM). The quenching of fluorescence intensity with the addition of Fe2+ ion gives the correlation coefficient (R2) value above 0.99286, exhibiting good binding stoichiometry nature of fluorophores with Fe2+ than the oligoesters. The high detecting capability of oligoesters is further ascertained by its higher LOD than the monomer (5.05×10−7). The binding constant values of fluorophores obtained from the Benesi‐Hildebrand plot show that the oligoesters have a higher binding ability (1.0012–1.0025 M−1) with Fe2+ ion than the monomer (1.0011 M−1). The conductivity nature of the oligoester gradually increased with the contact time of iodine. After 96hr of iodine doping, EMDAP exhibits higher conductivity (1.98×10−3 Scm−1) than the other oligoesters due to higher electron‐density nitrogen atoms in the structure. The EMDOP shows high dielectric constant value because of its π‐π interaction, loosely attached π electrons and high dipole moment values. All these experimental results are validated with the theoretical (DFT) approach by optimizing the structure of the fluorophore with B3LYP/6‐311++G(d,p) level basis set. The DFT approach also explains the mechanism of fluorescence quenching and the exact binding sites of fluorophores with Fe2+ ions.

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Section: Resultsmentioning

confidence: 99%

“…[72] From the results, the EMDOP can be used to prepare passive components like resistors, capacitors and so on. [73] At low frequencies, oligoesters exhibit higher dielectric loss and vice versa at higher frequencies indicating that the oligoesters can be appropriate for electro-optical device application. [74]…”

Section: Dielectric Propertymentioning

confidence: 99%

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection

et al. 2023

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“…of SbSI, a clear lack of response stability is evident, depicted by relatively significant voltage peaks. The amplitudes of these peaks are also affected by distinct signal-to-noise ratios (SNRs), attributed to the varied impedance properties of the tested materials [ 55 ]. Additionally, this phenomenon results from the differing mechanical properties, which are visibly discernible in Figure 9 , particularly at the lowest excitation frequency of 100 Hz.…”

Section: Resultsmentioning

confidence: 99%

Piezotronic Antimony Sulphoiodide/Polyvinylidene Composite for Strain-Sensing and Energy-Harvesting Applications

Jała,

Nowacki,

Toroń

2023

Sensors

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This study investigates the piezoelectric and piezotronic properties of a novel composite material comprising polyvinylidene fluoride (PVDF) and antimony sulphoiodide (SbSI) nanowires. The material preparation method is detailed, showcasing its simplicity and reproducibility. The material’s electrical resistivity, piezoelectric response, and energy-harvesting capabilities are systematically analyzed under various deflection conditions and excitation frequencies. The piezoelectric response is characterized by the generation of charge carriers in the material due to mechanical strain, resulting in voltage output. The fundamental phenomena of charge generation, along with their influence on the material’s resistivity, are proposed. Dynamic strain testing reveals the composite’s potential as a piezoelectric nanogenerator (PENG), converting mechanical energy into electrical energy. Comparative analyses highlight the composite’s power density advantages, thereby demonstrating its potential for energy-harvesting applications. This research provides insights into the interplay between piezoelectric and piezotronic phenomena in nanocomposites and their applicability in energy-harvesting devices.

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“…The most important applications of photodetector, being the component of the certain device for information transmission, are in-flame sensing [391], missile approach warning system [392], optical communications [393][394][395], and sensor imaging [396][397][398][399]. Although it is true that photoactive piezoelectric nanogenerators (PENGs) are gaining more and popularity owing to their enormous potential as a self-powered photodetector and pressure sensor, there is a lack of research explaining the mechanism of interactions between photogenerated carriers and piezoelectric charges.…”

Section: Sensors Actuators Transducers Photodetectorsmentioning

confidence: 99%

Current and future applications of PVDF-carbon nanomaterials in energy and sensing

Kujawa,

Boncel,

Al-Gharabli

et al. 2024

Chemical Engineering Journal

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Investigation of electrical and thermal properties of poly (vinylidene fluoride)/strontium hexaferrite polymer composites

Cited by 6 publications

References 32 publications

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection

Piezotronic Antimony Sulphoiodide/Polyvinylidene Composite for Strain-Sensing and Energy-Harvesting Applications

Current and future applications of PVDF-carbon nanomaterials in energy and sensing

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Investigation of electrical and thermal properties of poly (vinylidene fluoride)/strontium hexaferrite polymer composites

Cited by 6 publications

References 32 publications

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe2+ ion detection

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe2+ ion detection

Piezotronic Antimony Sulphoiodide/Polyvinylidene Composite for Strain-Sensing and Energy-Harvesting Applications

Current and future applications of PVDF-carbon nanomaterials in energy and sensing

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Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection

Synthesis and structural characterization of azine based oligoesteric chemosensors for Fe²⁺ ion detection