Polymer communication: Corona discharge from electrospinning jet of poly(ethylene oxide) solution

Corona discharges from electrospinning jets were observed and photographed at the tip of the Taylor cone, and in a cylindrical region around the jet, a few millimeters below the tip. The corona discharge was also faintly visible to a dark adapted eye. At the position at which the cylindrical corona...

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Bibliographic Details
Published in:Polymer (Guilford) 2009-04, Vol.50 (8), p.1835-1837
Main Authors: Tripatanasuwan, Sureeporn, Reneker, Darrell H
Format: Article
Language:English
Online Access:Get full text
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Summary:Corona discharges from electrospinning jets were observed and photographed at the tip of the Taylor cone, and in a cylindrical region around the jet, a few millimeters below the tip. The corona discharge was also faintly visible to a dark adapted eye. At the position at which the cylindrical corona discharge became apparent, typical conditions were a jet diameter of 30 mum, an applied potential of 12 kV, and a calculated radial electric field of 400 kV/cm, The calculated electric field required to create a corona in air around a metal wire of the same diameter, calculated from Peek's empirical formula, was only about 200 kV/cm. The cross sectional shape of some segments of the electrospun fibers had two or three lobes. The lobes often separated, and formed smaller fibers.
ISSN:0032-3861
DOI:10.1016/j.polymer.2009.02.021