Electrospinning of polymer nanofibers often begins with a single, straight, elongating, and electrified fluid jet that emanates from a droplet tip when the electric field at the surface is high enough. After some distance an electrically driven bending instability of the elongating jet occurs. For a polymer solution suitable for electrospinning, capillary instability does not cause the jet to become a spray of droplets. Under some conditions, a sequence of secondary jet branches emanates from the primary jet. This paper describes an experiment in which many closely spaced branches along the jet were observed during the electrospinning of a polycaprolactone solution. A theoretical description of the branching phenomenon is proposed. (c) 2005 American Institute of Physics.
Journal of Applied Physics
Required Publisher's Statement
Copyright 2005 American Institute of Physics. The original published version of this article may be found at http://dx.doi.org/10.1063/1.2060928.
Yarin, A. L.; Kataphinan, W.; and Reneker, Darrell Hyson, "Branching in Electrospinning of Nanofibers" (2005). College of Polymer Science and Polymer Engineering. 81.