Electrospinning is recognized as a simple and easy method to produce fibers with nanoscale diameters. However, the methods for controlling the shape, structure, and uniformity of electrospun fibers have not yet been fully investigated. In this research, the electrospinning jet behavior, corresponding nanofiber deposition, and average fiber diameter are examined with various nozzle diameters and applied voltages. The fluctuation in the sequence of drop growing, electrospinning, and/or termination of electrospinning is analyzed. We propose two different fluctuations according to the applied voltage and nozzle diameter. The multi-jet ejections that are closely related to the amount of nanoweb deposition and the deposition pattern are explored. POLYM. ENG. SCI., 49:2286-2292, 2009. (C) 2009 Society of Plastics Engineers
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