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

ISSN

1438-7492

Volume

295

Issue

7

Publisher

John Wiley & Sons

Publisher Location

PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY

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