摘要
Poly（vinyl pyrrolidone）（PVP）/Fe 3O 4 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（M s=15.1 emu/g）and a low coercive force（μ c=0）.
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）.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第10期2002-2004,共3页
Chemical Journal of Chinese Universities
基金
国家'九七三'计划(批准号:2001CB610500)
国家自然科学基金(批准号:50173009)
国家自然科学基金重大国际合作项目(批准号:20320120169)资助.
