摘要
合成了聚苯乙烯磺酸钠接枝Fe3O4/SiO2纳米复合材料.通过表面引发原子转移自由基聚合在Fe3O4/SiO2磁性纳米粒子表面包覆了阴离子聚电解质(聚苯乙烯磺酸钠).利用透射电子显微镜(TEM),傅立叶变换红外光谱仪(FT-IR),震荡磁力计(VSM),X射线能谱仪(EDS),全自动X射线衍射仪(XRD)等仪器对所制备的复合材料进行了表征,成功制备了尺寸均一的聚苯乙烯磺酸钠接枝Fe3O4/SiO2核壳结构的纳米复合材料.
The paper describes the synthesis of the PSStNa-grafted magnetite/silica nanocomposites. The modified silica-coated Fe3O4 microspheres were prepared by grafting the anionic polyelectrolyte （PSStNa） using surface-initiated atom transfer radical polymerization （SI-ATRP）. These hybrid microspheres are characterized by using various experimental techniques such as Transmission electron microscopy （TEM）, X-ray diffraction （XRD）, Energy dispersive X-ray spectrometry （EDS）, Fourier transform infrared spectroscopy （FT-IR）, and Vibration sample magnetometer （VSM）. Based on this method, the uniform-sized Fe3O4/SiO2 magnetic composites covered with PSStNa could be obtained.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第3期65-69,共5页
Journal of Shaanxi Normal University：Natural Science Edition
基金
陕西省科技攻关项目(2004K07-G14)
