Abstract
The effect of plasma and chemical methods on the stabilization of Polyacrylonitrile (PAN) nanofiber prepared by electrospinning technique, has been investigated at various oxygen contents (10%, 20%, and 30%) and KMnO4 solutions (3% and 5%). Fourier transform infrared (FT-IR) analysis of plasma and chemical oxidized samples indicated that the treated nanofibers were oxidized under different contents of oxygen plasma and KMnO4 contents by increasing the peak intensities of C&dbnd;O stretching band and OH– stretching vibration mode, respectively. Additionally conversion of C≡N bands into C&dbnd;N ones in the copolymer chain was observed in both plasma and chemical methods, but changes in chemical stabilized samples were not very sensible. Field emission scanning electron microscopy (FE-SEM) images revealed that the surfaces of the plasma treated nanofibers were extremely etched. Furthermore a higher reduction in the average oxidized nanofiber diameters was observed using plasma method.
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