Synthesis of Polyaniline-Fe_3O_4 Nanocomposites and Their Conductivity and Magnetic Properties  

作　　者：冷春江 

机构地区：[1]Key Laboratory of Artificial Microand Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第5期760-764,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(No.10974148);Sub-project of State Key Development Program of Basic Research of China(Nos. 2009CB939704 and 2009CB939705)

摘　　要：By using inorganic Fe3O4 nanoparticles of different content as nucleation sites, PAn-Fe3O4 nanorods were successfully synthesized through a simple, conventional, and inexpensive one-step in-situ polymerization method. The TEM images revealed the size and morphology of the resultant nanocomposite. The EDS pattern confirmed the existence of Fe3O4 in the composite. The FT-IR spectral analysis confirmed the formation of PAn encapsulated Fe3O4 nanocomposite. With the content of Fe3O4 increasing, the conductivity of the nanocomposites gradually decreases, meanwhile, the saturation magnetization increases and reveals a super paramagnetic behavior. With controllable electrical, magnetic, and electromagnetic properties, the well-prepared nanocomposites may have the potential applications in chemical sensors, catalysis, microwave absorbing, and electro-magneto-rheological fluids, etc.By using inorganic Fe3O4 nanoparticles of different content as nucleation sites, PAn-Fe3O4 nanorods were successfully synthesized through a simple, conventional, and inexpensive one-step in-situ polymerization method. The TEM images revealed the size and morphology of the resultant nanocomposite. The EDS pattern confirmed the existence of Fe3O4 in the composite. The FT-IR spectral analysis confirmed the formation of PAn encapsulated Fe3O4 nanocomposite. With the content of Fe3O4 increasing, the conductivity of the nanocomposites gradually decreases, meanwhile, the saturation magnetization increases and reveals a super paramagnetic behavior. With controllable electrical, magnetic, and electromagnetic properties, the well-prepared nanocomposites may have the potential applications in chemical sensors, catalysis, microwave absorbing, and electro-magneto-rheological fluids, etc.

关 键 词：POLYANILINE FE3O4 NANOCOMPOSITES CONDUCTIVITY super paramagnetism 

分 类 号：TB383.1[一般工业技术—材料科学与工程]