聚苯胺-LiNi铁氧体复合纳米微粒的原位合成及其键合机制  

In Situ Synthesis of Polyaniline-LiNi Ferrite Nanocomposite and Its Bonding Mechanism

作　　者：蒋静[1] 李良超[1] 徐烽[1] 颜冲[2] 

机构地区：[1]浙江师范大学化学系物理化学研究所,金华321004 [2]中国计量学院东磁研究院,杭州310018

出　　处：《化学学报》2007年第1期53-58,共6页Acta Chimica Sinica

基　　金：浙江省自然科学基金(No.Y405038);浙江省科技计划(No.2006C21080)资助项目.

摘　　要：通过原位溶液聚合法制备了聚苯胺-LiNi铁氧体(LiNi0.5Fe2O4)复合纳米微粒,用X射线衍射(XRD)、红外光谱(FTIR)、拉曼光谱(Raman)、紫外-可见光谱(UV-Vis)、透射电子显微镜(TEM)以及振动样品磁强计(VSM)等技术表征了复合物的结构、形貌和磁性能.结果表明,复合物在室温外加磁场下表现出亚铁磁性物质具有的磁滞现象,铁氧体颗粒对苯胺的聚合起到了核的作用;复合物中铁氧体与聚苯胺之间存在着比较明显的键合作用,探讨了铁氧体与聚合物分子链之间的键合机制.Polyaniline-LiNi ferrite （LiNi0.5Fe2O4） nanocomposites were synthesized by in situ aqueous polymerization of aniline in the presence of ferrite. The structure, morphologies and magnetic properties of samples were characterized by X-my diffraction （XRD）, infrared spectra （FTIR）, Raman spectra, UV-Vis spectra, transmission electron microscope （TEM） and vibrating sample magnetometer （VSM） techniques. The results indicated that the nanocomposites under applied magnetic field exhibited the hysteresis loops of the ferrimagnetic nature at room temperature. The ferrite particles had the core effect on the polymerization of aniline. The bonding interaction existed between ferrite particles and polyaniline in the composites, and the bonding mechanism was investigated.

关 键 词：LiNi铁氧体 聚苯胺 纳米复合物 磁学性质 键合机制 

分 类 号：O633.21[理学—高分子化学]