Nickel-multiwalled carbon nanotubes/polyvinylidene fluoride composites with high dielectric permittivity

Authors

  • Dan-dan Yang,

    1. School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, People's Republic of China
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  • Hai-ping Xu,

    Corresponding author
    • School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, People's Republic of China
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  • Jing-rong Wang,

    1. School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, People's Republic of China
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  • Yi-hua Wu

    1. School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai, People's Republic of China
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Correspondence to: H.-P. Xu (E-mail: hpxu@sspu.edu.cn)

ABSTRACT

Composites with nickel particles coated multiwalled carbon nanotubes (Ni-MWNTs) embedded into polyvinylidene fluoride (PVDF) were prepared by solution blending and hot-press processing. The morphology, structure, crystallization behavior, and dielectric properties of composites were studied. The results showed that the crystallization of PVDF was affected by Ni-MWNTs. With the increment of Ni-MWNTs, the content of β-phase in PVDF increased. The dielectric permittivity was as high as 290 at 103 Hz when the weight fraction of Ni-MWNTs was 10%. The results can be explained by the space charge polarization at the interfaces between the insulator and the conductor, and the formation of microcapacitance structure. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3746–3752, 2013

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