Electrospinning utilizes an electrical force to generate a fine,
charged jet from the surface of a viscous liquid. This jet moves
straight towards a grounded collector for a certain distance, then
bends into spiral coils; finally, the jet solidifies and collects
as nonwoven cloth. The onset and development of the electrical
bending instability were investigated. Under certain conditions,
high applied voltage prohibited the onset of bending and a straight
jet reached the collector. Submicron fibers were produced by
collecting a straight jet on a moving collector. The diameter,
velocity and the longitudinal stress along the jet axis were
measured using custom-built equipment. The relaxation of
longitudinal stress along the jet was experimentally verified.
Buckling instabilities of electrospinning jets were observed and
compared with the behavior of uncharged jets. A novel pendulum-like
motion of a straight electrified jet was observed and the resulting
hierarchical structures made from buckled fibers were presented. A
theoretical model was proposed and simulated results showed
reasonable agreement with the experimental observations.
General
Imprint: |
VDM Verlag
|
Country of origin: |
Germany |
Release date: |
June 2009 |
First published: |
June 2009 |
Authors: |
Tao Han
|
Dimensions: |
229 x 152 x 7mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
120 |
ISBN-13: |
978-3-639-15357-6 |
Categories: |
Books >
Science & Mathematics >
Chemistry >
General
|
LSN: |
3-639-15357-X |
Barcode: |
9783639153576 |
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