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Citation: SU Bi-Tao, ZUO Xian-Wei, HU Chang-Lin, LEI Zi-Qiang. Synthesis and Electromagnetic Properties of Polyaniline/CoFe₂O₄ Nanocomposite[J]. Acta Physico-Chimica Sinica, ;2008, 24(10): 1932-1936. doi: 10.3866/PKU.WHXB20081034 shu

Synthesis and Electromagnetic Properties of Polyaniline/CoFe₂O₄ Nanocomposite

1.
Key Laboratory of Gansu Polymer Materials, Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China

Received Date: 1 April 2008
Available Online: 9 July 2008

CoFe2O4magnetic nanoparticles were dealt with nitric acid to forman ionization surface and to improve the dispersibility of CoFe2O4 nanoparticles greatly. Then polyaniline (PANI)/CoFe2O4 electromagnetic nanocomposites with different amounts of CoFe2O4 were synthesized by in-situ polymerization method. The morphologies, structures, and electromagnetic properties of the PANI/CoFe2O4 nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform-infrared (FT-IR) spectra, four-probe electrometer, and vibrating sample magnetometer (VSM). The results indicated that the CoFe2O4 magnetic nanoparticles with diameter of about 25 nm were dispersed in the base of PANI and the bonding interaction existed between CoFe2O4 particles and polyaniline in the composites. The composites possessed both conductivity and magnetism. With increasing CoFe2O4 content, the conductivity of the composites decreased while the saturated magnetization (Ms) increased. Increasing CoFe2O4 content from 16.8%to 69.2%, the coercive force (Hc) of PANI/CoFe2O4 nanocomposites was higher than that of the CoFe2O4 nanoparticles and increased firstly and then decreased.
- Conducting polyaniline; CoFe2O4; Nanocomposites; In-situ polymerization; Electrical-magnetic property
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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis and Electromagnetic Properties of Polyaniline/CoFe2O4 Nanocomposite

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Electromagnetic Properties of Polyaniline/CoFe₂O₄ Nanocomposite