NDLI: Enhanced dielectric properties of PVDF-HFP/BaTiO<sub>3</sub>-nanowire composites induced by interfacial polarization and wire-shape

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Inside back cover

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Journal of Materials Chemistry C Vol - 3 Issue - 5

Journal of Materials Chemistry C Vol -2

Journal of Materials Chemistry C Vol -1

Enhanced dielectric properties of PVDF-HFP/BaTiO₃-nanowire composites induced by interfacial polarization and wire-shape

Content Provider	Royal Society of Chemistry (RSC)
Author	Yu, Y. Li, W. L. Zhang, T. D. Hou, Y. F. Cao, W. P. Fei, W. D. Feng, Y.
Copyright Year	2015
Abstract	Polymer based composites with high dielectric constant were successfully fabricated using BaTiO3 nanowires with high aspect ratio as inorganic filler and PVDF-HFP as polymer matrix. PVDF-HFP/BaTiO3 nanoparticles composites were also prepared as a contrast. The BaTiO3 nanowires were synthesized via one-step hydrothermal method. The BaTiO3 nanowires and its two types of composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and transmission electron microscopy. For the composites, breakdown strength measurements, tensile tests and broadband dielectric spectroscopy analyses were also carried out. The results show that the two types of fillers are homogeneously dispersed in the matrix. The dielectric constant of composites filled by BaTiO3 nanowires is larger than that filled by BaTiO3 nanoparticles at the same content. Stronger interfacial polarization was found in PVDF-HFP/BaTiO3 nanowire composites. Two theoretical models were employed to predict the dielectric constants of composites, and the experimental data were consistent with the estimated trend. The enhanced dielectric properties of PVDF-HFP/BaTiO3 nanowire composites are attributed to the superior interfacial polarization and high aspect ratio of BaTiO3 nanowires.
Starting Page	1250
Ending Page	1260
Page Count	11
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	3
Issue Number	6
Journal	Journal of Materials Chemistry C
DOI	10.1039/c4tc02183e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Fourier Relative permittivity Barium titanate Polymer Composite material Hydrothermal circulation X-ray crystallography Fourier-transform infrared spectroscopy Scanning electron microscope Transmission electron microscopy Dielectric spectroscopy Nanowire Dielectric
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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