Effect of Charge Density on the Taylor Cone in Electrospinning

Jonathan Stranger; Mark P. Staiger; Nick Tucker; Kerry Kirwan

doi:10.4028/www.scientific.net/SSP.151.54

Paper Titles

Mechanical Properties of Highly Filled Latex-Based Polystyrene/Laponite Nanocomposites
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Development of Polymer Matrix Clay Nanocomposites for Industrial Applications Using High Throughput Methods
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Melt Spinning of Carbon Nanotube Modified Polypropylene for Electrically Conducting Nanocomposite Fibres
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SWCNT as Cure-Induced Stress Sensors in Epoxy Nanocomposites
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Effect of Charge Density on the Taylor Cone in Electrospinning
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Hybrid Glass Mat Reinforced Polypropylene-Montmorillonite Nanocomposites
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Electrical Properties of Electrospun Nanofibers of PEO/Carbon Black Composite
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A Study on the Effect of Nano-Magnesium Hydroxide on the Flammability of Epoxy Resins
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Flame Retardancy of Thermoset Polymers Based on Nanoparticles and Carbon Nanotubes
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Effect of Charge Density on the Taylor Cone in Electrospinning

Abstract:

A detailed understanding of charge density and its origins during the electrospinning process is desirable for developing new electrospinnable polymer-solvent systems and ensuring mathematical models of the process are accurate. In this work, two different approaches were taken to alter the charge density in order to measure its effect on the Taylor cone, mass deposition rate and initial jet diameter. It was found that an increase in charge density results in a decrease in the mass deposition rate and initial jet diameter. A theory is proposed for this behaviour in that an increase in charge density leads to the tip of the Taylor cone forming a smaller radius of curvature resulting in the concentration of electric stresses at the tip. This leads to the electrostatic forces drawing the initial jet from a smaller effective area or “virtual orifice”.