Structure and electrophysical properties of polyvinylidene fluoride (PVDF)/magnetite nanocomposites

Ramazanov, M. A.; Maharramov, Abel; Shirinova, H. A.; Palma, Luca Di

doi:10.1177/0892705718796542

Cited by 15 publications

(8 citation statements)

References 8 publications

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“…This implies that increasing the magnetite nanoparticles creates ion vacancies in the copolymer and thereby boosts the ferromagnetic ordering in the polymer matrix. 26 Homogenous reinforcement of magnetic Fe 3 O 4 nanofillers over the non-magnetic copolymer matrix can be confirmed from the hysteresis loop. The change in magnetic properties is attributed to the dipolar nature and the magnetic interactions between the adjacent nanoparticles in the copolymer.…”

Section: Resultsmentioning

confidence: 86%

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

Jayakrishnan¹,

Jithin²,

Meera³

et al. 2022

Journal of Thermoplastic Composite Materials

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The increased demand for the discovery of new conducting materials encourages the researchers for the development of advanced electronic technologies. In the present study, nanocomposites of poly (anthranilic acid- co-indole)/(PANA- C o-PIN) and magnetite nanoparticles (Fe3O4) were prepared via a one-step polymerization method and evaluated by various analytical techniques. The Fourier transform infrared spectroscopy (FT-IR) spectra proved the presence of Fe3O4 nanofillers in the copolymer at 507 cm−1. Optical characterization (UV-Vis) shows a clear blueshift indicating strong interactions between Fe3O4 and PANA- C o-PIN. The X-Ray diffraction (XRD) patterns revealed an increase in crystallinity due to the well dispersed nanoparticles. FESEM images evidenced the morphological changes caused by the uniform dispersion of nanoparticles in the copolymer matrix. The nano-dispersion of magnetite nanoparticles in the copolymer was confirmed by High-resolution transmission electron microscopy analysis. Magnetic properties of nanocomposites obtained from a vibrating sample magnetometer (VSM) showed an increase in the saturation of magnetism with the addition of nanoparticles and the composite exhibited superparamagnetic behaviour. The thermal stability and glass transition temperature of the nanocomposites were greatly enhanced with the addition of nanoparticles and were determined with the help of Thermogravimetric Analysis (TGA) and Differential scanning calorimetry (DSC) respectively. Filler-dependent electrical properties showed a linearly increased DC conductivity with the addition of nanoparticles. The impedance analysis showed that the AC conductivity and dielectric properties of the nanocomposites were higher than the copolymer and the maximum electrical properties were observed for 15 wt.% of composites. The ammonia gas sensing performance of copolymer composite indicates the easy access of gas molecules to the sensor surface through the metal oxide nanoparticles. The synthesized copolymer nanocomposites showed high sensitivity and fast response to ammonia gas. The prepared composite with good thermal properties, dielectric constant, ammonia gas sensing and magnetoelectric properties is a promising candidate for use in nanoelectronics devices.

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Section: Resultsmentioning

confidence: 86%

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

Jayakrishnan¹,

Jithin²,

Meera³

et al. 2022

Journal of Thermoplastic Composite Materials

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“…In our opinion, this is due to the fact that in this case there are practically no polarization processes, i.e. with a further increase in the concentration, the nanoparticles behave as a separate dispersed phase, and consequently, as the concentration of nanoparticles increases, the conductivity of the compositions increases [18][19][20][21].…”

Section: Resultsmentioning

confidence: 96%

Metallopolymer Nanocomposites Based on PP/Ni: Structure and Electrophysical Properties

Рамазанов

Hajiyeva

2019

Acta Phys. Pol. A

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The polymer nanocomposite structures based on isotactic polypropylene and nickel nanoparticles were obtained and studied by scanning electron microscopy, UV-Vis, FT-IR, and dielectric spectroscopy. IR studies show that the introduction of nickel nanoparticles into the polypropylene matrix does not change the chemical structure of the polymer, that is, nickel nanoparticles are not in the chemical, but in physical interaction with the polymer. It is also shown that as the frequency increases, the value of the permittivity of the nanocomposite based on PP/Ni does not change, and this is due to the lack of polarization processes. The value of the dielectric loss tangent depends on the Ni concentration with an extremum, that is, with an increase in the content of Ni nanoparticles, the value of the dielectric loss tangent decreases and at a content of 3% Ni in the polymer, the value of tan δ is minimal and a further increase in the concentration leads to an increase in the dielectric loss tangent. A sharp decrease in the resistivity at 383 K, 413 K, and 423 K, respectively, for the nanocomposites PP/3% Ni, PP/5% Ni, and PP/10% Ni is explained by the destruction of the crystalline phase of the polymer and the increase in electrical conductivity of the nanocomposites.

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“…Only the strong doublet at 2984 and 3024 cm ‒1 as well as the bands at 1674 and 4426 cm ‒1 can be assigned to CH 2 groups, the stretching vibration of C = O related to the presence of DMF, and C‒H bond in the copolymer, respectively. [ 52,53 ] This suggests that a small content of the DMF solvent forms the hydrogen bonds with the PVDF‐HFP copolymer films. It is also known that the formation of hydrogen bonds between copolymer, Fe NPs fillers, and DMF might be a reason why the β PVDF phase has not been detected in the XRD and Raman measurements.…”

Section: Resultsmentioning

confidence: 99%

Poly(Vinylidene Fluoride‐co‐Hexafluoropropylene) Films Filled in Iron Nanoparticles for Infrared Shielding Applications

Krajewski

Witowski

Liou

et al. 2023

Macromol. Rapid Commun.

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In order to use the infrared (IR) radiation shielding materials, they should take a form of thin film coatings deposited on glass/polymer substrates or be used as fillers of glass/polymer. The first approach usually suffers from several technological problems. Therefore, the second strategy gains more and more attention. Taking into account this trend, this work presents the usage of iron nanoparticles (Fe NPs) embedded into the poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films as the shielding material in near-infrared (NIR) and mid-infrared (MIR) region. The performed investigations show that the transmittance of copolymer films decreases with increasing content of the Fe NPs inside them. It is found that the average fade of IR transmittance for 1, 2.5, 5, 10, and 50 mg of Fe NPs is about 13%, 24%, 31%, 77%, and 98%, respectively. Moreover, it is observed that the PVDF-HFP films filled in the Fe NPs almost does not reflect the NIR and MIR radiation. Hence, the IR shielding properties of the PVDF-HFP films can be effectively tuned by the addition of proper amount of the Fe NPs. This, in turn, shows that the PVDF-HFP films filled in the Fe NPs constitute a great option for IR antireflective and shielding applications.

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Structure and electrophysical properties of polyvinylidene fluoride (PVDF)/magnetite nanocomposites

Cited by 15 publications

References 8 publications

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

Synthesis, characterization, magnetoelectric properties and gas sensing application of Poly(anthranilic acid-co-indole)/ magnetite nanocomposites

Metallopolymer Nanocomposites Based on PP/Ni: Structure and Electrophysical Properties

Poly(Vinylidene Fluoride‐co‐Hexafluoropropylene) Films Filled in Iron Nanoparticles for Infrared Shielding Applications

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