Results
Title

Electrospinning and Mechanotropic Phenomena in Polymer Solutions.

Authors

Kotomin, Sergey; Malkin, Alexander; Skvortsov, Ivan

Abstract

The mechanism of electrospinning traditionally is related to fast evaporation of solvent from thin liquid jets of polymer solution observed in high‐voltage electric fields. Another mechanism, called mechanotropic spinning, is more reasonable for polymer solutions in solvents having low vapor pressure and high boiling temperature, that is, dimethylacetamide (DMAc), DMF, dimethyl sulfoxide (DMSO). Under elongation, the solution undergoes phase separation as a result of high‐speed stretching and the solvent reveals on the surface of the fiber without its complete evaporation. Microfibers obtained by mechanotropic spinning as well as by electrospinning of PAN solutions in DMSO and polyamidbenzamidazol in DMAc have stable droplets of the solvent on the fiber surface.

Subjects

POLYMER solutions; DIMETHYL sulfoxide; ELECTROSPINNING; MICROFIBERS; POLYACRYLONITRILES; VAPOR pressure; ELECTRIC fields; EVAPORATION (Chemistry)

Publication

Macromolecular Symposia, 2020, Vol 389, Issue 1, p1

ISSN

1022-1360

Publication type

Academic Journal

DOI

10.1002/masy.201900091