Effect of Concentration on Polyacrylonitrile (PAN) Nanofibers

The study investigates the effect of solution concentration on the morphology of polyacrylonitrile (PAN) nanofibers. PAN electrospun nanofibers are produced from PAN/DMF solutions at six different concentrations (6%-16%). The morphology of the nanofibers is analyzed by scanning electron microscope. The experimental results show that the fiber diameter increases and the bead formation decreases as the concentration increases. On the other hand, the nanofiber diameter becomes finer but less uniform as the concentration decreases.