Composite Nanofibers Containing Microparticles Produced via a Stepped Pyramid-Shaped Spinneret

A novel free surface electrospining via a stepped pyramid-shaped spinneret was used to prepare composite nanofibers containing microparticles. We investigate the spinnability of Polyacrylonitrile (PAN) solution containing graphite powder microparticles. The influence of microparticle on fiber diameter has been studied. This method can be used to produce composite nanofibers containing microparticles structures by electrospinning in mass scale.