Abstract:

Continuous polyacrylonitrile (PAN) based nanofiber filament yarns were successfully obtained by a self-designed electrospinning device with dynamic water bath. The yarns were stretched by drying heating and wet heating. The PAN-based nanofiber filament yarn prepared under different conkitions were characterized and investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) , and the optimal conditions for resultant yarns and the influence of dry heat-finishing and teat stretching finishing on the properties and crystallinity of the yarns were obtained. It was found that the diameter of the fiber increased with the increase of mass percent of PAN and with the decrease of electrospinning voltage. The higher the receiving distance, the finer the fiber linear density. After beat finishing, fiber is densified and its strengh is increased.

Key words: electrospinning, polyacrylonitrile, heat-finishing, nanofiber filament