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Dielectric relaxations of high-k poly(butylene succinate) based all-organic nanocomposite films for capacitor applications

Published online by Cambridge University Press:  15 September 2011

Li Yu ,
Shanming Ke ,
Yihe Zhang ,
Bo Shen ,
Anzhen Zhang  and
Haitao Huang
Li Yu
Affiliation:
State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China; and Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Shanming Ke
Affiliation:
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Yihe Zhang*
Affiliation:
State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing100083, China
Bo Shen
Affiliation:
State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing100083, China
Anzhen Zhang
Affiliation:
State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing100083, China
Haitao Huang*
Affiliation:
Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
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Abstract

High-dielectric constant all-organic composite films consisting of polyaniline (PANI) filler and poly(butylene succinate) host were synthesized by simple blending process. The chemical structures and morphology of the composite films were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. The dielectric properties of the composite films with different filler concentrations were studied in the frequency range of 100–106 Hz. A percolation phenomenon was observed in the composite films with a percolation threshold vc = 19.7% and the dielectric constant was 10 times that of the pure host material. The enhancement in the dielectric constant can be ascribed to Maxwell–Wagner–Sillars polarization and the low-dielectric loss to good dispersion of PANI filler in the host. As the host polymer is biodegradable, it may be applied as a “green” dielectric material.

Keywords

CompositeDielectric propertiesFilm
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 19 , 14 October 2011 , pp. 2493 - 2502
Copyright
Copyright © Materials Research Society 2011

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