Izvestiya of Saratov University.

Mathematics. Mechanics. Informatics

ISSN 1816-9791 (Print)
ISSN 2541-9005 (Online)

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Salkovskiy Y. E. Modeling of Polymer Fiber Evaporation. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2011, vol. 11, iss. 2, pp. 109-112. DOI: 10.18500/1816-9791-2011-11-2-109-112

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Modeling of Polymer Fiber Evaporation

Salkovskiy Yu. E., Saratov State University

Solvent evaporation process from the surface of two-phase polymer solution axisymmetric fiber is analyzed. Fick’s law of mass diffusion was employed under the condition that the solvent diffusion depends upon the solvent concentration according to the Vrentas – Duda free-volume theory. Numerical results are provided for the PAN/DMF fibers of different initial radii that are close to jet radii in electrospinning experiments. Significant non-uniformity of the solvent concentration distribution over the fiber cross-section was observed, that leads to the high inhomogeneity of physical properties inside the fiber. The given model can be used as a basis for more accurate modeling of electrospinning of nanofibers.

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