摘要
通过溶液聚合法制备了聚苯胺-镧掺杂L iN i铁氧体(L iN i0.5La0.08Fe1.92O4)纳米复合物,采用X-射线衍射、傅立叶变换红外光谱、紫外-可见光谱、热失重分析、原子力显微镜和振动样品磁强计研究了复合材料的结构、形貌和磁性能.研究表明,铁氧体颗粒与聚苯胺之间存在化学键合作用,铁氧体纳米粒子的引入能够提高聚苯胺的热稳定性,并对复合材料的形貌有一定的影响.在外加磁场作用下,复合材料表现出亚铁磁性物质具有的磁滞现象,且其饱和磁化强度和矫顽力都比纯铁氧体小.
Polyaniline （PANI） -LiNi0.5La0.08Fe1.92O4 nanocomposite were synthesized by polymerization of ani-line in the presence of LiNi0.5La0.08Fe1.92O4 ferrite. The structure, morphologies and magnetic properties of products were characterized by powder X-ray diffraction, Fourier transform infrared, UV-vis spectra, thermo-gravimetric analysis, atomic force microscopy and vibrating sample magnetometer. The results indicated the bonding interaction between ferrite and PANI in the composite. The incorporation of ferrite improved the thermal stability of PANI and had effection on the morphology of the composite. Under magnetic field the nanocomposite exhibited the hysteresis loops of the ferrimagnetic nature at room temperature, and the values of the saturation magnetization and coercivity for the composite were less than that of the pure ferrite.
出处
《浙江师范大学学报（自然科学版）》
CAS
2006年第4期425-429,共5页
Journal of Zhejiang Normal University:Natural Sciences
基金
浙江省自然科学基金资助项目(Y405038)
金华市科技计划项目(2004-2-157)
