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Citation: Wei Jian-Hong, Shi Jing, Guan Jian-Guo, Yuan Run-Zhang. Surface Modification of PAn Particles[J]. Acta Physico-Chimica Sinica, ;2003, 19(07): 657-660. doi: 10.3866/PKU.WHXB20030719 shu

Surface Modification of PAn Particles

1.
Department of Physics, Wuhan University, Wuhan　430072; 2State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan　430070

Received Date: 11 November 2002
Available Online: 15 July 2003

By using modified sol-gel method, BaTiO3 nano-films were coated on the surface of polyaniline particles. The structure and morphology of coated powders were characterized by TEM and FT-IR, the electrorheological effects were also investigated. The infrared spectrogram shows that there is N－O hydrogen-bond forming between PAn and BaTiO3 in coated particle. TEM results show that the diameters of the coated particles are 1.0～1.5 μm.In addition, the dielectric properties and electrorheological effects are improved greatly by the coating process. It has provided us a new method for the preparation of excellent ER materials and further studies should be continued.
- Surface coating;PAn;BaTiO₃;Electrorheological effects;　Dielectric properties
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