Preparation and electrical resistivity research of CNFs/ZnO composite nanofiber membrane

Polyacrylonitrile /zinc acetate( PAN /Zn( Ac)2) composite nanofibers were produced by electrospinning. After stabilization and carbonization, carbon / zinc oxide( CNFs / ZnO) composite nanofibers were made. Various nanofiber membranes were characterized by SEM,FT-IR,TEM,EDS and SZT-2 automatic four-point probe tester. The results revealed that to obtain desirable CNFs / ZnO composite nanofibers,PAN / Zn( Ac)2composite nanofibers were stabilized at 270 ℃ for 2 h and carbonized at 800 ℃ for 1 h. The diameters of CNFs / ZnO composite nanofibers were less than those of corresponding PAN / Zn( Ac)2composite nanofibers; the thermostability of CNFs was improved by adding acetate zinc into spinning solution; ZnO nanoparticles dispersed well on the surface and inside of the CNFs; and the electrical resistivity of CNFs / ZnO composite nanofibers were higher than that of pure carbon nanofibers,and with the increase of the ZnO content the electrical resistivity of CNFs / ZnO composite nanofibers also increased.