期刊
MATERIALS LETTERS
卷 64, 期 11, 页码 1313-1315出版社
ELSEVIER
DOI: 10.1016/j.matlet.2010.03.018
关键词
Graphite; Electrical properties; Semiconductors; Composite materials
资金
- Natural Science Foundation of Zhejiang Province [Y4080417]
Expanded graphite/polyaniline electrical conducting composites were prepared by emulsion polymerization of aniline in the presence of expanded graphite. The phase composition and morphology of the composites were characterized by X-ray diffractometer and scanning electron microscopy, respectively. The electrical conductivities were measured by a four-probe resistivity instrument. The dielectric loss factor was performed on an impedance/material analyzer. The electrical conductivities of the composites were enhanced dramatically to 298.51 S cm(-1) compared to polyaniline. The composites also showed excellent dielectric loss behavior in the frequency range from 1 MHz to 3 GHz, and the maximum of the dielectric loss factor approximated to 15,000. (C) 2010 Elsevier B.V. All rights reserved.
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