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Frequency and Temperature Dependences of Dielectric Dispersion and Electrical Properties of Polyvinylidene FluorideExpanded Graphite Composites
Joint Authors
Tjong, Sie Chin
Li, Yu Chao
Li, Robert Kwok Yiu
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-01-19
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
A conductive nanofiller, expanded graphite (EG), was introduced into polyvinylidene fluoride (PVDF) by direct melt blending process.
The electrical conductivity and dielectric properties of resulting PVDF/EG composites were investigated in a wide range of frequencies from 102 to 108 Hz.
The dielectric dispersion and conductivity of the composite system exhibited a strong frequency dependence particularly in the vicinity of percolation threshold (Φc=6 vol%).
Moreover, the dielectric permittivity tended to decrease with increasing frequency while the conductivity displayed a reverse trend.
A large permittivity was found in the composite having EG content near Φc.
Accordingly, percolation concept and biased random walk approach can be used to describe the carrier transport of percolating PVDF/EG system.
The conductivity and permittivity of percolating PVDF/EG composites were observed to be temperature dependent.
American Psychological Association (APA)
Li, Yu Chao& Li, Robert Kwok Yiu& Tjong, Sie Chin. 2010. Frequency and Temperature Dependences of Dielectric Dispersion and Electrical Properties of Polyvinylidene FluorideExpanded Graphite Composites. Journal of Nanomaterials،Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-458395
Modern Language Association (MLA)
Li, Yu Chao…[et al.]. Frequency and Temperature Dependences of Dielectric Dispersion and Electrical Properties of Polyvinylidene FluorideExpanded Graphite Composites. Journal of Nanomaterials No. 2010 (2010), pp.1-10.
https://search.emarefa.net/detail/BIM-458395
American Medical Association (AMA)
Li, Yu Chao& Li, Robert Kwok Yiu& Tjong, Sie Chin. Frequency and Temperature Dependences of Dielectric Dispersion and Electrical Properties of Polyvinylidene FluorideExpanded Graphite Composites. Journal of Nanomaterials. 2010. Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-458395
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458395