Читать книгу Applications of Polymer Nanofibers - Группа авторов - Страница 39

Flash spinning is one of spunbonding process that dissolved polymers are extruded from the spinneret, and the solvent rapidly evaporates at its boiling point with a high pressure to produce a filament composed of submicro/nanofibers. It is particularly suitable for high molecular weight polymers, which can result in fiber diameters as small as 0.2 μm.

Xia et al. used flash spinning to produce ultrahigh molecular weight polyethylene fibers (Xia et al. 2015). The successful fabrication of the fibers was influenced by the solution temperature and the spinning pressure. They concluded that nanosized fibers could be obtained by ranging the solution temperature from 150 to 210 °C and the spinning pressure from 8 to 20 MPa. In their study, the nozzle temperature and the solution concentration were 100 °C and 5 wt%, respectively.