Rheological characterization of PIB solutions. Top: Shear viscosity measurement for Boger fluid: the shear viscosity of the fluid is seen to effectively remain constant over a wide shear rate range. Bottom: Relaxation time determination for two different PIB Boger fluids, one with , and the other with .
Experimental images of glycerol jets using an increasing applied potential difference. Left to right: [kV]: 9.5, 10, 10.5, 11, 11.5.
A comparison between experimental and simulated profiles for a glycerol jet. Lines are the simulated profiles and circles represent the experimental profiles.
Glycerol, (left) and LiCl, (right) under exactly the same spinning conditions, , .
Top: predicted influence of conductivity increase on the jet radius profile; bottom: contributions to jet current.
Electric field intensity and surface charge profiles for glycerol and salt jets.
A comparison of experimental and simulated radius profiles for the glycerol-salt solution.
Influence of the Deborah number on the jet profile.
Top: dimensionless thinning force per unit length along the jet; Bottom: Extensional viscosity profile along the jet at various Deborah numbers.
Top: dimensionless axial stretching force profile along jet; bottom: ratio of stretching force to extensional viscosity.
Influence of fluid properties. Top: electrical conductivity; bottom: viscosity.
Top: influence of surface tension; bottom: influence of fluid flow rate.
Influence of finite extensibility on jet profile.
Images of jets of increasing viscoelasticity. Left to right: glycerol, ; PIB, ; PIB, ; PIB , .
Top: experimental radius profiles extracted from the images in Fig. 14; bottom: experimental radius profiles observed from the spinning of PIB at different flow rates.
A comparison of simulated and experimental jet radius profiles; top left: PIB, and , top right: PIB, and , bottom left: PIB; and , bottom right: PIB ; and .
Qualitative behavior of PEO-water jets: experiment and simulation. The simulation parameters are ; ; ; ; ; ; ; ; and . The experimental image is of a PEO-water solution using applied over a gap of .
Measured property values for glycerol and Boger fluids.
Dimensionless electrostatic force parameter and electric field strength for glycerol.
Parameter values for electrospinning of glycerol-LiCl
Dimensionless groups corresponding to the conditions of spinning experiments.
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