ABSTRACT
The electrospinning process was shown to be a means of creating porous thin films with structural gradients and controlled morphology that could enhance biocompatibility. Electrospinning a polymer solution could produce thin fibers with a variety of cross-sectional shapes. The velocity profile inside the liquid cone at the base of an electrically driven jet was examined by inserting tracer particles into the liquid. An analytical solution was presented that predicts the velocity profile inside the cone. An electrospinning process was used to fabricate silk fibroin nanofiber nonwovens for wound dressing applications. Nanofibers of polyaniline doped with camphorsulfonic acid blended with polyethylene oxide were prepared by the electrospinning technique. In the steady state, the electrospinning process was carried out while the rotating speed was zero, that is, not moving and steady. In centrifugal electrospinning, due to the electronic force partly taking the place of centrifugal force to get over the surface tension, the rotational velocity need not be very large.
