Fe3O4 decorated graphene/poly(vinylidene fluoride) nanocomposites with high dielectric constant and low dielectric loss

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

2 Scopus Citations
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Author(s)

  • Yuchao Li
  • Dongmei Zhang
  • Shuangshuang Wang
  • Yanhu Zhan
  • Jie Yin
  • Xuquan Tao
  • Xiangcai Ge
  • Hong-Yuan Liu
  • Yiu Wing Mai

Detail(s)

Original languageEnglish
Pages (from-to)152-161
Journal / PublicationComposites Science and Technology
Volume171
Early online date20 Dec 2018
Publication statusPublished - 8 Feb 2019

Abstract

Percolative poly(vinylidene fluoride) (PVDF) composites with high dielectric constant and low dielectric loss was successfully achieved by incorporating reduced graphene oxide (rGO) decorated with magnetic iron oxide (Fe3O4) (rGO@Fe3O4) nano-fillers. The morphology, structure, thermal, electrical and magnetic properties of the composites were investigated systematically by using SEM, XRD, FTIR, TGA, DSC, impedance analyzer and magnetometer, respectively. The presence of a tiny amount of poly(sodium 4-styrene sulfonate) (PSSNa) facilitated the homogeneous distribution of rGO@Fe3O4 nanoparticles and prevented the formation of an electrical conductive network within the PVDF matrix, resulting in an excellent dielectric performance of the rGO@Fe3O4/PVDF nano-composites. With 1.0 wt% rGO@Fe3O4 incorporated in PVDF, the nanocomposite exhibited a high dielectric constant of 1297 and a low dielectric loss of 0.26 at 100 Hz. Percolation model revealed that such improvements could be attributed to the synergistic effect of the inorganic Fe3O4 and rGO, whereby the electric charges were accumulated by forming many mini-capacitors in the bulk PVDF matrix. The structure-property behavior of the final nanocomposites was discussed.

Research Area(s)

  • A: Nano composites, B: Electrical properties, B: Magnetic properties

Citation Format(s)

Fe3O4 decorated graphene/poly(vinylidene fluoride) nanocomposites with high dielectric constant and low dielectric loss. / Li, Yuchao; Zhang, Dongmei; Wang, Shuangshuang; Zhan, Yanhu; Yin, Jie; Tao, Xuquan; Ge, Xiangcai; Tjong, Sie Chin; Liu, Hong-Yuan; Mai, Yiu Wing.

In: Composites Science and Technology, Vol. 171, 08.02.2019, p. 152-161.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review