Tailoring electromagnetic interference shielding, electrical and thermal properties of poly(vinylidene fluoride) based hybrid nanocomposites with carbon nanofiber and magnetite nanoparticles
Article
Article Title | Tailoring electromagnetic interference shielding, electrical and thermal properties of poly(vinylidene fluoride) based hybrid nanocomposites with carbon nanofiber and magnetite nanoparticles |
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ERA Journal ID | 201060 |
Article Category | Article |
Authors | Sabu, Aleena, Narayanan B, Sabarish, Annamalai, Pratheep Kumar and Raghava, Ramanujam Brahmadesam Thoopul Srinivasa |
Journal Title | Journal of Materials Chemistry C |
Journal Citation | 13 (4), pp. 1982-1998 |
Number of Pages | 7 |
Year | 2025 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 2050-7526 |
2050-7534 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/d4tc02880e |
Web Address (URL) | https://pubs.rsc.org/en/content/articlelanding/2025/tc/d4tc02880e |
Abstract | To develop flexible conducting polymer composite (CPC) based microwave absorbers, tuning the electrical conductivity of the composite to a higher value by improving the dispersion of fillers in the polymer matrix is important. Therefore, the present study aims at improving the dispersion of carbon nanofiber (CNF) and magnetite nanoparticles (Fe3O4) in poly(vinylidene fluoride) (PVDF) matrix, by incorporating 1 wt% poly(vinylpyrrolidone) (PVP) as the compatibilizer to achieve enhanced electrical and electromagnetic interference shielding properties of hybrid nanocomposites. The enhanced dispersion of nanofillers in the PVDF matrix was confirmed by high-resolution transmission electron microscopy (HRTEM), field emission scanning electron microscopy (FESEM) and impedance analyses. The hybrid nanocomposites contain predominantly the electroactive gamma phase of PVDF as confirmed by X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FTIR) and differential scanning calorimetry (DSC) analyses. The solution blended, 0.1 mm thick PVDF–9 wt% CNF–3 wt% Fe3O4 hybrid nanocomposite film exhibits an electromagnetic interference shielding effectiveness (EMI SE) of 17.1 dB at 10 GHz dominated by absorption phenomenon. Additionally, the onset and main chain degradation temperatures of PVDF in the hybrid nanocomposites (with 1 and 3 wt% Fe3O4) are increased by more than 40 °C compared to PVDF–9 wt% CNF nanocomposites with 1 wt% PVP. The storage modulus of the hybrid nanocomposites was increased to about 164.2% at 40 °C in comparison to neat PVDF film with PVP as evidenced by dynamical mechanical analysis (DMA). Thus, the solution blended PVDF–CNF–Fe3O4 hybrid nanocomposite film with improved electrical, mechanical, thermal and EMI shielding properties can be used for microwave absorption application. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401605. Functional materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Amrita School of Physical Sciences Coimbatore, India |
Amrita School of Engineering Coimbatore, India | |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
https://research.usq.edu.au/item/zqzqz/tailoring-electromagnetic-interference-shielding-electrical-and-thermal-properties-of-poly-vinylidene-fluoride-based-hybrid-nanocomposites-with-carbon-nanofiber-and-magnetite-nanoparticles
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