Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
10.06.2009
Verlag
VDMSeitenzahl
120
Maße (L/B/H)
22/15/0,7 cm
Gewicht
176 g
Sprache
Englisch
ISBN
978-3-639-15357-6
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.
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.
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