Frequency-Dependent Complex Permittivity in Polymers: Insights from Molecular Dynamics Simulations
발표자
()
초록
내용
The relentless advancements in technology demand the development of new polymer materials with custom-tailored dielectric properties, addressing for diversified applications. For instance, energy storage demands a high dielectric constant and a remarkable breakdown strength, whereas signal transmission benefits from a low dielectric constant and dielectric loss. In this work, we utilize molecular dynamic (MD) simulations to track the time evolution of the dipole moment of individual molecules. This approach enables the characterization of the dielectric relaxation of polymeric materials. Our study computes the frequency-dependent complex permittivity of polymers composed of siloxanes or maleimides, and investigate the effects of incorporating phenyl functional groups into their structure. Based on our findings, we will discuss the influence of the content ratio and configuration of the aromatic rings along the chain on complex permittivity.