TITLE

Electrospinning: A whipping fluid jet generates submicron polymer fibers

AUTHOR(S)
Shin, Y. M.; Hohman, M. M.; Brenner, M. P.; Rutledge, G. C.
PUB. DATE
February 2001
SOURCE
Applied Physics Letters;2/19/2001, Vol. 78 Issue 8, p1149
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Polymeric fibers with diameters in the range from 50 nm to 5 μm are produced by accelerating a fluid jet in an electric field, in a process known as "electrospinning." Here we show that an essential element of the process is a fluid instability, the rapidly whipping jet. The phenomena responsible for the onset of whipping are revealed by a linear instability analysis that describes the jet behavior in terms of known fluid properties and operating conditions. The behavior of two competing instabilities, the Rayleigh mode and the axisymmetric conducting mode, is also described. The results are summarized using operating diagrams, delineating regimes of operation in electrospinning, which are in good agreement with experimental observations. © 2001 American Institute of Physics.
ACCESSION #
4710821

 

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