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Issue 17, 2015
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Sub-ms dynamics of the instability onset of electrospinning

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Abstract

Electrospun polymer jets are imaged for the first time at an ultra-high rate of 10 000 frames per second, investigating the process dynamics, and the instability propagation velocity and displacement in space. The polymer concentration, applied voltage bias and needle–collector distance are systematically varied, and their influence on the instability propagation velocity and on the jet angular fluctuations is analyzed. This allows us to unveil the instability formation and cycling behavior, and its exponential growth at the onset, exhibiting radial growth rates of the order of 103 s−1. Allowing the conformation and evolution of polymeric solutions to be studied in depth, high-speed imaging at the sub-ms scale shows significant potential for improving the fundamental knowledge of electrified jets, leading to finely controllable bending and solution stretching in electrospinning, and consequently better designed nanofiber morphologies and structures.

Graphical abstract: Sub-ms dynamics of the instability onset of electrospinning

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Article information


Submitted
05 Dec 2014
Accepted
02 Mar 2015
First published
09 Apr 2015

This article is Open Access

Soft Matter, 2015,11, 3424-3431
Article type
Paper

Sub-ms dynamics of the instability onset of electrospinning

M. Montinaro, V. Fasano, M. Moffa, A. Camposeo, L. Persano, M. Lauricella, S. Succi and D. Pisignano, Soft Matter, 2015, 11, 3424
DOI: 10.1039/C4SM02708F

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