Development of Coaxial Air-blown Electrospinning Process for Manufacturing Non-woven Nanofiber. I. Morphology Changes in Non-woven Nanofiber

초록

This study led to the development of an electro-coaxial air blown spinning system, which involves using a sheathcorenozzle for electrospinning, and the authors examined how the morphology of the fabricated nanofiber changedaccording to four process parameters. When the morphology changes of the nanofiber were analyzed using different processparameters, the increase in air flow rate was accompanied by the decrease in fiber diameter owing to shear force. On the otherhand, as the concentration of the solution increased, the diameter of the nanofiber increased owing to the force of attractionbetween polymer chains. In addition, the diameter of the nanofiber decreased at a higher voltage owing to increasingorientation and the whipping phenomenon. Finally, when the tip to collector distance (TCD) was too close, it was difficult toobtain a perfect fiber, and the fiber produced in such a scenario was excessively thick and flat. However, when the TCDexceeded a certain value, no change in diameter of the nanofiber was observed. An intelligent prediction model needs to bedeveloped to apply the results of this study to real processes.

키워드