期刊
POLYMER
卷 50, 期 8, 页码 1835-1837出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2009.02.021
关键词
Electrospinning; Poly(ethylene oxide); Corona discharge
资金
- NSF NIRT [DMI-0403835]
- NSF [1110-0038-002]
- Coalescence Filtration Nonmaterial Consortium
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 mu m, 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. (c) 2009 Elsevier Ltd. All rights reserved.
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