【作者】 郭亚平； 郭亚军； 吕君英； 谭秀民；

【Author】 GUO Ya-ping, GUO Ya-jun, LU Jun-ying, TAN Xiu-min (College of Chemical Engineering, Harbin Engineering University, Harbin 150001, China)

【机构】 哈尔滨工程大学化工学院；

【摘要】 共沉淀-熔盐法合成的BaFe8(Ti0.5Mn0.5)4O19纳米颗粒掺杂在邻甲苯胺的酸性溶液中,采用原位复合法制备导电聚邻甲苯胺磁性复合颗粒。借助FTIR、XRD、UV-Vis、TEM和VSM等分析手段研究了复合粒子的形貌、结构及其光、电和磁性能。结果表明,BaFe8(Ti0.5Mn0.5)4O19以15nm左右的晶粒分散于聚邻甲苯胺(POT)基体之中,一定程度上减小了铁氧体纳米粒子的团聚。但是BaFe8(Ti0.5Mn0.5)4O19与POT之间不存在化学键合作用,此现象与其它文献报道不一致。POT/BaFe8(Ti0.5Mn0.5)4O19复合颗粒的导电性随POT含量的增加而增强,而比饱和磁化强度随之下降。更多还原

【Abstract】 Conducting poly-O-methylaniline composites with magnetic nano-particles have been prepared by in situ composite technique in the presence of substituted Ti-Mn-barium ferrite nano-particles which are synthesized with coprecipitation-melted salt method. The conformation, structure, optical properties and electromagnetic properties of POT/BaFe8(Tio.5Mn0.5)4O19 nanocomposites particles are characterized by FTIR, XRD, UV-Vis, TEM and VSM. The results indicated that the BaFe8(Ti0.5Mn0.5)4O19 nanoparticles with diameter of about 12nm are dispersed in poly-O-methylaniline, at the same time, the complex can reduce the agglomeration of BaFe8(Ti0.5Mn0.5)4O19 particles to some extent. There are not chemical bonds between poly-O-methylaniline and BaFe8(Ti0.5Mn0.5)4O19 in POT/BaFe8(Ti0.5Mn0.5)4O19 nanocomposites, which is not in accordance with the phenomena recorded in the literature. The composite possesses both conductivity and magnetization. With increasing POT content, the conductivity of composite is increased, but the magnetization is reduced.更多还原