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Expanded graphite/cobalt ferrite/polyaniline ternary composites: Fabrication, properties, and potential applications

Published online by Cambridge University Press:  11 October 2011

Liangchao Li ,
Chen Xiang ,
Haisheng Qian ,
Bin Hao ,
Keyu Chen  and
Ru Qiao
Liangchao Li*
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
Chen Xiang
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
Haisheng Qian
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
Bin Hao
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
Keyu Chen
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
Ru Qiao
Affiliation:
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: sky52@zjnu.cn
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Abstract

Expanded graphite/cobalt ferrite/polyaniline (EG/CF/PANI) ternary composites were obtained by a two-step process. The intercalation compound, CF embedded in EG, was synthesized by a coprecipitation method. PANI could then be coated on the surface of the EG/CF microparticles by in-situ polymerization to form ternary composites of EG/CF/PANI. The results indicate that the electrical and magnetic performance of EG/CF and EG/CF/PANI composites are related to their composition. The EG/CF composite with mass ratio of 1.0 has the maximal conductivity (833.33 S·cm−1) among the binary composites. Saturation magnetizations (Ms) of the EG/CF composite with mEG/mCF of 0.8 is the largest among EG/CF composites, the ternary composites of EG/CF/PANI were prepared from the EG/CF composite at this mass ratio. The electromagnetic wave absorbing property of all ternary composites excelled those of EG/CF composites, and the sample with 40 wt% of PANI has the best absorption properties in the range of 8–18 GHz frequency.

Keywords

CompositeMagnetic propertiesAbsorbent
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 21 , 14 November 2011 , pp. 2683 - 2690
Copyright
Copyright © Materials Research Society 2011

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