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Simplified modeling of the electrospinning process from the stable jet region to the unstable region for predicting the final nanofiber diameter
Author(s) -
Ismail Nagham,
Maksoud Fouad Junior,
Ghaddar Nesreen,
Ghali Kamel,
TehraniBagha Ali
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.44112
Subject(s) - electrospinning , polyacrylonitrile , nanofiber , materials science , fiber , jet (fluid) , polymer , scanning electron microscope , composite material , electric field , polymer chemistry , mechanics , physics , quantum mechanics
Electrospinning allows the production of ultrafine nanofibers through the stretching of a charged polymer jet with an external electrostatic field. In this study, we derived a simplified and accurate model relating the processing parameters, including the solution volumetric flow rate ( Q ), the applied electric field ( E ), and the polymer concentration, to the final fiber diameter. The model takes into consideration the jet behavior starting at the stable region and moving to the bending instability region. We validated the model experimentally by performing the electrospinning process with a polyacrylonitrile/ N,N ‐dimethylformamide solution with different ranges of concentrations (8–11 wt %), Q s (900–1320 μL/h), and E s (88,889–113,889 V/m). The final fiber diameter was measured with scanning electron microscopy. The model predicted the fiber diameter with a relative error of less than 10%. Moreover, a 30% increase in Q resulted in a 15% increase in the fiber diameter, whereas a 30% increase in E resulted in a 14% decrease in the fiber diameter. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44112.