| Summary: | In this paper, the effect of weight fraction and frequency on dielectric properties of polymethylmethacrylate filled with copper nanobud particles is studied. copper nano particles were synthesized by chemical reduction method. The resultant copper nano particles were characterized by UV-Vis spectroscopy and X-ray diffraction (XRD). Results show that the Cu Nps have bud shapes, and their average particle size obtained from the XRD study is 53.78 nm. For the resultant composite materials, such as the dielectric behavior of composite materials reinforced with 5%, 10%, 15%, and 20% weight fractions of copper nanobud particles and frequency ranges of 50, 250, 103, 104, 105, and 106 Hz at 25 °C were investigated. Results reveal that the dielectric constant, dielectric loss factor, and dissipation factor increased with the increase in weight fraction of copper nanobud particles due to their high conductivity. The dielectric constant, dielectric loss, and dissipation factor decreased with the increase in frequency.
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