Effect of Zn(NO3)2 filler on the dielectric permittivity and electrical modulus of PMMA

Abstract

Composite films consisting of polymethyl methacrylate (PMMA) and Zn(NO 3) 2 were developed in the laboratory through the sol casting technique. These films were characterized using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The morphological analysis was carried out by scanning electron microscopy (SEM). These analyses revealed the homogeneous and semi-crystalline behaviour of the films. The dielectric response measurement was conducted in the frequency range from 100 Hz to 5 MHz. The real and imaginary part of the dielectric permittivity decreased with the increase in frequency but increased with temperature. The electrical conductivity measurement showed a plateau-like behaviour in the low-frequency region and dispersion in the high-frequency region. The frequency-dependent electrical modulus obeyed Arrhenius law, and it showed an increase in the dipolar interaction with the temperature due to thermal activation. The activation energy of the film specimen was estimated to be about 0.448 eV. Thus the polymeric composite PMMA-Zn(NO 3) 2 is one of the appropriate candidate for numerous technical applications such as supercapacitors, high-speed computers and gate dielectric material for organic FETs.

Tunable optical and dielectric properties of polymeric composite materials based on magneso-silicate

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TiO2 reinforced polymeric nanocomposites of HCl‐doped polyaniline and their properties

“…Both of them were found to be frequency x ð Þ dependent. The real part was measured experimentally using relation: e PANI and PANI-TiO 2 (2%, 4%, 6%, and 8%) nanocomposites at temperature 313 K. It was observed that the decrease in dielectric constant and dielectric loss occurred with increase in frequency due to dipolar polarization in lower frequency region [44]. The dielectric constant and dielectric loss were frequency independent due to charge relaxation.…”

Optic and Dielectric Properties of Different Amount NiFe2O4Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

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“…In other word, Maxwell-Wagner behavior is related to the imaginary part of the complex dielectric constant. [43][44][45][46] Applied bias voltage evolution of the ε , ε and tan(δ) is related to the potential well in Fig. 3c.…”