Effect of experimental parameters on needleless electrospinning from a conical wire coil

In this study, a conical wire coil was used as spinneret to launch a novel needleless electrospinning. Multiple polymer jets were observed on the surface of the coil in the electrospinning process. Productivity of the nanofibers can be enhanced to > 2.5 g/h by using this novel nozzle. The fiber productivity and diameter together with diameter distribution were dependent on the concentration of the polymer solution, applied voltage, and collecting distance. This novel concept of using wire coil as the electrospinning nozzle depicts a model of large-scale needleless electrospinning system for nanofiber production. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 3703-3709, 2012