On the Measured Current in Electrospinning
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JR09-2034_ms_rev2.pdf
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main article
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709.92 KB
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Author(s)
Bhattacharjee, P. K.
Schneider, T. M.
Brenner, M. P.
McKinley, Gareth H
Rutledge, Gregory C
Date Issued
February 2010
Journal
Journal of Applied Physics
Publisher
American Institute of Physics
Citation
Bhattacharjee, P. K. et al. “On the measured current in electrospinning.” Journal of Applied Physics 107.4 (2010): 044306.
Version
Author's final manuscript
Abstract
The origin and scaling of the current measured during steady electrospinning of polymer solutions in organic solvents are considered. For a specified electric field strength E, flow rate Q, and conductivity K, the total measured current is shown empirically to scale as Itotal ∼ EQ0.5K0.4, for a wide variety of polymer solutions with different electrical conductivities. It is also shown that Itotal is composed of two distinct components: one that varies linearly with E, and another that is independent of E, but varies with the conductivity K of the fluid and the flow rate Q. The experimental evidence suggests that the latter component arises due to a secondary electrospray emanating from the surface of the jet. The consequence of this secondary electrospray mechanism on the final fiber size achieved during the electrospinning process is also discussed.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1063/1.3277018
