EFFECTS OF SPINNING AND PROCESS CONDITIONS ON APPEARANCE AND DIAMETER OF ELECTROSPUN POLYAMIDE-6 NANOFIBERS

摘要

In this work, polyamide-6 in formic acid was used to study the effects of various spinning and process conditions on the appearance and diameter of the ultra-fine, electrospun fibers obtained. These influencing conditions include concentration of the solutions, molecular weight of polyamide-6, polarity and level of the applied electrostatic field, and nozzle-to-collector distance. The resulting polyamide-6 fibers were characterized for their appearance and diameter, using scanning electron microscopy (SEM) technique. It was found that the fiber diameter was in the range of 60 to 300 nm. Interestingly, flat fibers were observed when negative electrostatic field was applied on polyamide-6 solutions of high viscosity.