Abstract
A series of nanocomposites are synthesized by dispersion method with different weight percentages (0–1.5%) of iron oxide nanoparticles in unsaturated polyester resins. X-ray diffraction (XRD) patterns confirmed the amorphous nature of all the samples. A random dispersion of nanofillers in the polymer matrix is revealed by scanning electron microscope (SEM) images. Higher value of dielectric constant (78) and tangent loss (0.45) is observed at 100 Hz for 1.5% nanoparticles. The relationship between conduction mechanism and contents of nanoparticles reveals that conductivity of nanocomposites enhanced by increasing the nanoparticles’ percentage showing values between 1 × 10−4 to 2.5 × 10−3 S/cm. Vibrating sample magnetometer (VSM) results showed that synthesized nanocomposites exhibit a ferromagnetic behavior. Moreover, VSM analysis displays that magnetic parameters such as saturation magnetization, coercivity and retentivity of the nanocomposites increase by increasing the nanoparticles concentration.
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