中文摘要：

静电纺丝法是一种制备超细纳米纤维的简单有效的方法，已用于多种材料的制备．近几年来，有彬无机复合纳米纤维由于其优异的性能已被广泛地应用于化学（生物）防护、药物传输、能量产生及存储、高性能选择过滤、气体传感器等方面．

英文摘要：

Poly（ vinyl pyrrolidone） （PVP）/Fe3O4 composite nanofibers were successfully prepared by using electrospinning technique. The composite nanofibers were characterized by means of TEM （ transmission electron microscopy）, XRD（ X-ray diffraction） and TGA（ thermogravimetric analysis）. Transmission electron microscope images of the PVP/Fe3O4 nanofibers show that the Fe3O4 nanoparticles with a diameter about 10. 5 nm were dispersed in PVP fiber matrices. The XRD results show that the particles in PVP fibers were indeed Fe3O4 nanoparticles. And the TGA of PVP/Fe3O4 nanofibers show that the content of Fe3O4 nanoparticles in the composite was about 36.8% （mass fraction）. The PVP/Fe3O4 nanofibers were found to be superparamagnetic. The hysteresis loop at room temperature showed a high saturated magnetization （Ms = 15.1 emu/g） and a low coercive force （μc = 0）.