Electrospinning experimental setup

Electrospinning based on the application of a static electric field on a polymer solution or melt through a spinneret appears to be a simple and well-controllable technique able to produce polymeric nanofibers. A typical experimental setup is based on a capillary injection tip, a high-voltage source able to apply electric fields of 100-500 KVm , and a metallic collector, or counter electrode. Electric current in electrospinning experiments is usually in the order of a few milliamperes. ... 

A polymer solution with a concentration of 15 wt% was prepared by dissolving polyacrylonitrile (PAN) in DME PAN solution in DMF was loaded into a 1 ml syringe. A modified electrospinning system consisting of two syringe pumps was used to produce bulky nanofibre mats. The experimental setup of this electrospiiming procedure is shown in Figure 2.4. 

Figure 1 Electrospinning setup (a) experimental setup (b) coaxial nozzle.

Figure 19.14 Schematic illustration of the basic setup for electrospinning, (a) The typical SEM image of nonwoven mat of polymer nanofibers, (b) CCD image of the stable con-jet spinning model. Photographs illustrating the instability region of a liquid jet and the capture time was on two different scales (c) 1/250 s and, (d) 18 ns. (Reprinted from Polymer, 42, Y.M. Shin, M.M. Hohman, M.P. Brenner and G.C. Rutledge Experimental characterization of electrospinning The electrically forced jet and instabilities, 9955-9967, 2001, with permission from Elsevier.)...

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