Numerical simulation of gas‐assisted polymer‐melt electrospinning: Parametric study of a multinozzle system for mass production

In this study, we developed a multiphysics model for simulation of a gas‐assisted melt‐electrospinning (GAME) process, focusing on jet formation and propagation behavior. By numerically calculating the stresses acting on the jet during a single‐nozzle GAME process, the shear viscous stress was ident...

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Bibliographic Details
Published in:Polymer engineering and science 2020-09, Vol.60 (9), p.2111-2121
Main Authors: Kwon, Youbin, Yoon, Jihyun, Jeon, Seung‐Yeol, Cho, Daehwan, Lee, Kwangjin, Ahn, SeungHyun, Yu, Woong‐Ryeol
Format: Article
Language:English
Subjects:
Analysis
Boundary conditions
Computer simulation
Electric fields
Electrospinning
Games
gas assisted
Mass production
Mathematical models
multinozzle
Nozzles
Numerical analysis
Parametric statistics
Polymer industry
polymer melt‐electrospinning
Polymers
process design
Sharpening
Shear
Simulation
Stress propagation
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Summary:In this study, we developed a multiphysics model for simulation of a gas‐assisted melt‐electrospinning (GAME) process, focusing on jet formation and propagation behavior. By numerically calculating the stresses acting on the jet during a single‐nozzle GAME process, the shear viscous stress was identified as the main factor with respect to jet stretch; thus, the relationship between shear viscous stress and jet thickness was investigated. The jet stretch ratio increased sharply when shear viscous stress reached the level at which jet sharpening occurred, leading to stable jet formation. We defined this stress as the critical shear viscous stress to determine stable spinnability. By imposing an electric field distribution calculated for a multi‐nozzle array (number of nozzles, tip‐to‐tip distance, and applied voltage) on the boundary condition of the single‐nozzle GAME simulation model, multinozzle GAME was simulated; this enabled proposal of a spinnability diagram for stable spinning.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.25455