Micro-structure, thermal, and dielectric performance of polyester nanocomposites containing nano-Ni 0.5 Zn 0.5 Fe 2 O 4
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Micro‑structure, thermal, and dielectric performance of polyester nanocomposites containing nano‑Ni0.5Zn0.5Fe2O4 T. A. Taha1,2 · A. Hassona2 · S. Elrabaie2 · M. T. Attia2 Received: 9 May 2020 / Accepted: 27 August 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract This manuscript aims to investigate the structural, thermal, and dielectric properties of polyester/Ni0.5Zn0.5Fe2O4 nanocomposites. The synthesized samples were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscope, transmission electron microscope (TEM), thermogravimetric analysis (TGA), and dielectric measurements. The XRD patterns confirmed the existence of both polyester and N i0.5Zn0.5Fe2O4 nanoparticles peaks. FTIR analysis confirmed the incorporation of N i0.5Zn0.5Fe2O4 nanoparticles into the polyester matrix in agreement with XRD results. SEM micrographs showed distribution of nanoparticles inside the polymer and TEM image showed a little agglomeration of N i0.5Zn0.5Fe2O4 with flake-like micrometer-sized particles. The incorporation of nanofiller into the polymer increases the thermal stability as the weight losses reduced with nanoparticles content. Dielectric analysis depicted the enhancement in both real and imaginary parts of permittivity when nanoparticles concentration increased. Additionally, the AC conductivity increased while the electric impedance decreased with increasing Ni0.5Zn0.5Fe2O4 concentration. Keywords Polyester · Nanocomposite · TGA · Dielectric spectroscopy
1 Introduction Nowadays, hybrid materials from organic/inorganic materials gains intensive concern of researchers due to their unique properties [1–8]. Because of their capacity to behave as stabilizers or surface capping agents, organic polymers are great hosts for trapping metal and semiconductor nanoparticles. Due to the fascinating characteristics of nanosize and large surface area; nanoparticles are more attractive so, the polymer/nanofiller composites presented properties better than conventional polymer composites [9–14]. Polyester is the fourth most produced polymer, accounting for about 18% of world polymer manufacturing [15]. Recently, ferromagnetic particles integrated in polymer composites increasingly used as microwave absorbents at high frequencies [16–18]. NiZn ferrite has high saturation * T. A. Taha [email protected] 1
Physics Department, College of Science and Arts, Jouf University, P.O. Box 756, Al‑Gurayyat, Saudi Arabia
Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt
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magnetization, notable chemical stability, and excellent mechanical strength as one of the most significant magnetic materials [19]. NiZn ferrite nanomaterials showed good results for the attenuation of electromagnetic waves [20]. The ferromagnetic NiZn ferrite nanomaterials are generally useful in electromagnetic (EM) wave absorption owing to its natural resonance for EMI shielding materials.
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