Dielectric and Thermal Properties of One-Pot Hydrothermal Synthesis of Exfoliated Molybdenum Disulfide Doped In Polyvinylidene Fluoride Nanocomposite

Document Type : Original Article

Authors

1 Spectroscopy Department, Physics Research Institute, National Research Centre, El Behooth St., 12622 Dokki, Cairo, Egypt

2 Chemistry Department, Faculty of Science, Suez Canal University, Ismailia, Egypt

3 Microwave Physics &Dielectrics Dep, Physics Research Institute, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt

4 Chemistry Department, Faculty of Science, Taif University, 21944 Taif, P.O.Box 11099, Saudi Arabia

Abstract

Eco-friendly and economically visible processing routes of nanomaterial and nanocomposite is essentially required for the industrial scaling of nanotechnology. The present work aims to prepare ferroelectric polymer nanocomposites with high permittivity to be useful as high dielectric constant (high-k) materials because of their potential applications in the electronic and electrical industries. Therefore, the semiconducting molybdenum disulfide (MoS2) exfoliated by the one-pot hydrothermal method was introduced at different concentrations into a ferroelectric polyvinylidene fluoride (PVDF) matrix, forming MoS2/PVDF nanocomposite films which were annealed at 160oC for 5 h. Then, the electrical properties of these films were investigated over a wide range of frequencies at room temperature using the broadband dielectric spectrometer (BDS). In addition, the thermal properties of MoS2/PVDF nanocomposite were evaluated. It was found that the samples annealing at 160 oC did not affect the electrical properties but showed electrical stability of all the nanocomposite films. The interfacial polarization and DC conductivity highly affected the samples electrical properties. The composites with high loading of MoS2 nanosheets (>1wt. %) significantly enhanced both of permittivity and electrical conductivity.

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Egyptian Journal of Chemistry
Volume 67, Issue 13 - Serial Number 13
In Loving Memory of Late Professor Doctor ””Mohamed Refaat Hussein Mahran””
December 2024
Pages 481-487

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History

  • Receive Date: 24 December 2023
  • Revise Date: 12 January 2024
  • Accept Date: 14 February 2024

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