New Polymeric Three-Phase Nanocomposites Based on Polyvinylidene Fluoride, Magnetite Nanoparticles and Multi-Walled Carb
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New Polymeric Three‑Phase Nanocomposites Based on Polyvinylidene Fluoride, Magnetite Nanoparticles and Multi‑Walled Carbon Nanotubes: Production, Structure and Properties M. A. Ramazanov1 · H. A. Shirinova1 · F. V. Hajiyeva1 · Dzmitry Bychanok2 Received: 6 April 2020 / Accepted: 23 June 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract In this study, the production and the EM-wave absorption properties of the polymer nanocomposites were investigated. The two- and three-phase polymer nanocomposites on the base of the PVDF matrix, multi-walled carbon nanotubes, and magnetite nanoparticles were produced by the in-situ method. With the help of XRD and SEM methods, produced nanocomposites were analyzed. Measurement of the absorption coefficient of the nanocomposites with different filler concentrations shows that the maximum effect was obtained for the nanocomposite, with 20 wt% of MWCNT in the PVDF matrix. Very close value to maximum was also, got for a nanocomposite, which contained 10 wt% of MWCNT and 5 wt% of Fe3O4 in the PVDF matrix. These results were related to energy dissipation at the high-frequency region, depending on the components fraction in the nanocomposites. Keywords Polymer nanocomposites · Multi-walled-carbon-nanotubes · Scattering parameters · Electromagnetic interference shielding
1 Introduction Nowadays, as a result of the advanced development of science and technology, the number of sources of electromagnetic (EM) radiation is quickly increasing, and EM waves are used in a very broad frequency range [1]. Researches have shown that Wi-Fi routers and mobile phones are operating at a frequency of 2.4–5 GHz and 0.4–2.7 GHz, respectively. Also, radios, televisions, computers are sources of EM radiation in the MHz range [2–4]. However, it is known that the safety level of EM waves for humans is up to 300 GHz [5]. Inherently, in this case, the consequences arising from the direct impact of EM radiation on the life activity and functionality of biological and technical objects, respectively, are * M. A. Ramazanov [email protected] Dzmitry Bychanok [email protected] 1
Department Chemical Physics of Nanomaterials, Baku State University, Z. Khalilov str 23, AZ1148 Baku, Azerbaijan
BSU Research Institute for Nuclear Problems, Belarusian State University, Bobruisk str.11, 220006, Minsk, Belarus
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inevitable. Therefore, the development of shielding systems against EM radiation is a complicated and critical issue. The essential technical requirements for such systems are mainly to find a comprehensive solution to the problem of shielding EM radiation, as well as to ensure the security of information, stored as the form of EM waves [6]. For these reasons, one of the main tasks of modern material science is the creation of new types of materials that can be used as a protective shielding against EM radiation and also, are cheaper and technologically manageable. Recently, various materials have been developed to meet the above requirements and have already be
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