Lin, Y. Z.; Feng, L. K.; Li, Y. D.; Chang, C. F.; Zhu, C. Z.; Wang, M. L.; Xu, J. Dielectric constant calculation of poly(vinylidene fluoride) based on finite field and density functional theory. Chinese J. Polym. Sci. 2024, 42, 655–662
Yong-Zhi Lin, Lu-Kun Feng, Ya-Dong Li, et al. Dielectric Constant Calculation of Poly(vinylidene fluoride) Based on Finite Field and Density Functional Theory[J]. Chinese Journal of Polymer Science, 2024, 42(5): 655-662.
Lin, Y. Z.; Feng, L. K.; Li, Y. D.; Chang, C. F.; Zhu, C. Z.; Wang, M. L.; Xu, J. Dielectric constant calculation of poly(vinylidene fluoride) based on finite field and density functional theory. Chinese J. Polym. Sci. 2024, 42, 655–662DOI: 10.1007/s10118-024-3079-7.
Yong-Zhi Lin, Lu-Kun Feng, Ya-Dong Li, et al. Dielectric Constant Calculation of Poly(vinylidene fluoride) Based on Finite Field and Density Functional Theory[J]. Chinese Journal of Polymer Science, 2024, 42(5): 655-662.DOI: 10.1007/s10118-024-3079-7.
Dielectric Constant Calculation of Poly(vinylidene fluoride) Based on Finite Field and Density Functional Theory
The study introduces a method combining density functional theory and finite field method to estimate dielectric properties of polymers. It accurately predicts constants for polyethylene and polytetrafluoroethylene
and investigates the impact of conformation variations in polyvinylidene fluoride on its dielectric constant
providing insights for material design and advancing materials science.
Abstract
In this study
we proposed a novel method that integrates density functional theory (DFT) with the finite field method to accurately estimate the polarizability and dielectric constant of polymers. Our approach effectively accounts for the influence of electronic and geometric conformation changed on the dielectric constant. We validated our method using polyethylene (PE) and polytetrafluoroethylene (PTFE) as benchmark materials
and found that it reliably predicted their dielectric constants. Furthermore
we explored the impact of conformation variations in poly(vinylidene fluoride) (PVDF) on its dielectric constant and polarizability. The resulting dielectric constants of
α
- and
γ
-PVDF (3.0) showed excellent agreement with crystalline PVDF in experiments. Our findings illuminate the relationship between PVDF’s structural properties and its electrical behavior
offering valuable insights for material design and applications.
关键词
Keywords
references
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