Free volume dependence of the dielectric constant of poly(vinylidene fluoride) nanocomposite films
Lei Yang, Xuyang Liu, Zhouxun Lu, Tong Song, Zhihong Yang, Jianmei Xu, Wei Zhou, Xingzhong Cao, Runsheng Yu, Qing Wang
Abstract
composites is discussed. The greatly enlarged size of free volume holes is believed to potentially generate disparate effects on dielectric constant under different frequencies in such kinds of HESD polymer-based composites, bringing about more remarkable frequency dependence of the dielectric constant. The influence of atomic-scale microstructure based on free volume further clarifies the free volume effects on the dielectric properties and provides valuable insights for the research of dielectric behaviour of polymer composites, which is constructive to design novel dielectric materials and further optimize the dielectric properties of dipolar dielectric polymer composites.