New observations of jets that produce nanofibers

Tao Han, Alexander Yarin, Sureeporn Tripatanasuwan, Darrell H. Reneker

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Longitudinal stresses and critical radial electric fields were observed in electrospinning jets. Viscoelastic stresses in the straight segment of electrically-driven jets of polymer solutions were determined from the propagation of a lateral displacement pulse along the jet. The displacement was applied to the orifice from which the jet issued. A sensitive video camera was used to observe the location and intensity of the light emitted from corona discharges that were created at particular locations around the jet. Since the onset of a corona discharge in air occurred predictably at a critical value of the radial electric field, the corona showed where, along the tapering jet, the electric field reached the critical value. The corona continued, for a short distance along the jet, while the electric field at the surface decreased, and then stopped. When corona was present, many segments of the collected fibers were split longitudinally into two or more smaller, side-by-side nanofibers.

Original languageEnglish
Title of host publicationICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials
PublisherChemical Industry Press
Number of pages4
ISBN (Print)9787122067876
Publication statusPublished - 2009 Jan 1
Externally publishedYes
Event2009 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2009 - Shanghai, China
Duration: 2009 Oct 212009 Oct 24


Other2009 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2009

ASJC Scopus subject areas

  • Polymers and Plastics

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