Analysis of Dielectric Parameters of Fe 2 O 3 -Doped Polyvinylidene Fluoride/Poly(methyl methacrylate) Blend Composites.
Minal BafnaFarah DeebaAnkit K GuptaKriti ShrivastavaVaibhav KulshresthaAnkur JainPublished in: Molecules (Basel, Switzerland) (2023)
In this paper, we report the effect of metal oxide (Fe 2 O 3 ) loading in different weight ratios (0.5%, 1%, 2%, and 4%) on the structural and electrical parameters, viz., the complex dielectric constant, electric modulus spectra, and the AC conductivity, of polymeric composites of PVDF/PMMA (30/70 weight ratio) blend. The structural and geometric measurements have been analyzed with the help of peak location, peak intensity, and peak shape obtained from XRD as well as from FTIR spectra. The electrical properties have been investigated using an impedance analyzer in the frequency range 100 Hz to 1 MHz. The real parts of the complex permittivity and the dielectric loss tangent of these materials are found to be frequency independent in the range from 20 KHz to 1 MHz, but they increase with the increase in the concentration of nano-Fe 2 O 3 . The conductivity also increases with an increased loading of Fe 2 O 3 in PVDF/PMMA polymer blends. The electric modulus spectra were used to analyze the relaxation processes associated with the Maxwell-Wagner-Sillars mechanism and chain segmental motion in the polymer mix.
Keyphrases
- density functional theory
- body mass index
- weight loss
- physical activity
- reduced graphene oxide
- visible light
- weight gain
- high frequency
- drug delivery
- quantum dots
- body weight
- high intensity
- drinking water
- cancer therapy
- molecular dynamics
- single molecule
- computed tomography
- magnetic resonance
- atomic force microscopy
- drug release
- high speed