Studying of Nanoribbon and Circular Poly (Vinyl Alcohol) Nanofibers Deposited by Electrospinning: Film Synthesis, Characterization Structure, and Resistance Corrosion

The electrospinning technique was used to produce poly (vinyl alcohol) nanofibers. Effect of parameters such as voltage, feed rate, concentration of polymeric solution and space among the tip of the needle and the collector were studied. Field-emission scanning electron microscopy, Energy-dispersive x-ray spectroscopy and Fourier-transform infrared spectroscopy analysis were used for surface morphology and chemical composition of PVA nanofibers. By increasing the electrospinning distance, the morphology of PVA was changed from ribbon to circular shape. In addition, by increasing the feed rate of polymeric solution and polymer concentration, the thickness of the ribbon fibers and fiber diameter have increased, while the mean width of the fibers with the flat cross section has decreased and there is gradual change from round cross section to flat fibers. While with increasing the applied voltage, the width and diameter of the fibers approximately decreased. Contact angle measurement was used for investigation of the wetting and hydrophobicity of PVA nanofibers before and after cross-linking treatment. The corrosion performance of PVA in solutions in corrosive medium as inhibitors, electrospun fibers on the substrate and thermal cross-linked fibers was investigated by Electrochemical impedance spectroscopy technique. Cross-linked PVA fibers showed better protection than other cases. [GRAPHICS] .

Automated summary

The electrospinning technique was used to produce poly (vinyl alcohol) nanofibers. The effects of various parameters on the fiber morphology and chemical composition were studied. The cross-linked PVA fibers showed improved protection performance.