Bafna Minal, Deeba Farah, Gupta Ankit K, Shrivastava Kriti, Kulshrestha Vaibhav, Jain Ankur
Department of Physics, Agrawal P. G. College, Jaipur 302003, India.
Department of Physics, S. S. Jain Subodh P. G. College, Jaipur 302004, India.
Molecules. 2023 Jul 28;28(15):5722. doi: 10.3390/molecules28155722.
In this paper, we report the effect of metal oxide (FeO) 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-FeO. The conductivity also increases with an increased loading of FeO 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.
在本文中，我们报道了以不同重量比（0.5%、1%、2%和4%）负载金属氧化物（FeO）对PVDF/PMMA（重量比30/70）共混聚合物复合材料的结构和电学参数的影响，即复介电常数、电模量谱和交流电导率。借助于从XRD以及FTIR光谱获得的峰位置、峰强度和峰形状，对结构和几何测量结果进行了分析。使用阻抗分析仪在100 Hz至1 MHz的频率范围内研究了电学性能。发现这些材料的复介电常数实部和介电损耗正切在20 KHz至1 MHz范围内与频率无关，但它们随着纳米FeO浓度的增加而增加。在PVDF/PMMA聚合物共混物中，电导率也随着FeO负载量的增加而增加。电模量谱用于分析与Maxwell-Wagner-Sillars机制和聚合物混合物中的链段运动相关的弛豫过程。
