Abstract
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 language | English |
|---|---|
| Title of host publication | ICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials |
| Publisher | Chemical Industry Press |
| Pages | 123-126 |
| Number of pages | 4 |
| Volume | 1 |
| ISBN (Print) | 9787122067876 |
| Publication status | Published - 2009 Jan 1 |
| Externally published | Yes |
| Event | 2009 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2009 - Shanghai, China Duration: 2009 Oct 21 → 2009 Oct 24 |
Other
| Other | 2009 International Conference on Advanced Fibers and Polymer Materials, ICAFPM 2009 |
|---|---|
| Country | China |
| City | Shanghai |
| Period | 09/10/21 → 09/10/24 |
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ASJC Scopus subject areas
- Polymers and Plastics
Cite this
New observations of jets that produce nanofibers. / Han, Tao; Yarin, Alexander; Tripatanasuwan, Sureeporn; Reneker, Darrell H.
ICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials. Vol. 1 Chemical Industry Press, 2009. p. 123-126.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - New observations of jets that produce nanofibers
AU - Han, Tao
AU - Yarin, Alexander
AU - Tripatanasuwan, Sureeporn
AU - Reneker, Darrell H.
PY - 2009/1/1
Y1 - 2009/1/1
N2 - 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.
AB - 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.
KW - Corona discharge
KW - Electrospinning
KW - Elongational rheometry
UR - http://www.scopus.com/inward/record.url?scp=84904317187&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904317187&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9787122067876
VL - 1
SP - 123
EP - 126
BT - ICAFPM 2009 - Proceedings of 2009 International Conference on Advanced Fibers and Polymer Materials
PB - Chemical Industry Press
ER -