Electrospinning of continuous aligning yarns with a `Funnel' target
Document Type
Article
Publication Date
1-1-2010
Abstract
A new electrospinning set-up is described for continuous aligning of poly(L-lactide) yarn. It comprises a slowly rotating grounded `funnel' target and a winder placed right up to the funnel. A charged polymer jet is ejected from a nozzle. The electrospun fibers are first accumulated on the mouth plane of the funnel to form a web. The web is then pulled upward and guided to a winder on which twisted fibers are continuously wound as a bundle. Each filament of the bundle is slanted at about 45 relative to the collecting direction, and its average diameter is 6.0+/-1.9 mu m. The drawn fiber shows improved tensile properties as a result of the increased molecular orientation. The morphologies of the twisted fibers before and after drawing are compared.
Keywords
Fibers, structure, structure-property relations, tension, X-ray
Publication Title
Macromolecular Materials and Engineering
Volume
295
Issue
7
Publisher
John Wiley & Sons
Publisher Location
PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY