(Color online) Sketch of the electrospinning setup.
Sketch of the modeling approach. The charged beads emerge from the spinneret and are accelerated downwards by the electric field. The connector elements consist of a viscoelastic Maxwell element in parallel with a Newtonian viscous dumbbell element, representing the Newtonian solvent in which the polymer chains are embedded.
Simulation results for 4000 ppm PIB Boger fluid.
Influence of solvent viscosity on jet radius profile.
Radius profiles obtained from bead-spring simulations, continuum simulations and experiment. (a) 4000 ppm PIB Boger fluid, and (b) 8000 ppm.
Stress profile along the jet during electrospinning for 4000 ppm PIB Boger fluid, ΔV = 12 kV.
Fraction of the jet current carried by convection, eeff/eo for electrospinning of 4000 ppm PIB Boger fluid, under the spinning conditions in Sec. III C.
Influence of surface tension on the initial jet profile.
Influence of the applied potential difference on stable jet profiles for 8000 ppm PIB Boger fluid.
Experimental image of stable jet observed during electrospinning of PEO-2M using ΔV = 10 kV, d = 25 cm, Q = 0.1 mL/min.
Bead-spring model simulation prediction for stable jet radius development for electrospinning of PEO-2M, and comparison with experimental data.
Property values for various PIB Boger fluids, and for 2.5 wt% PEO/water solution.a
Characteristic scales and dimensionless groups.
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