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Electrospinning of Continuous Aligning Yarns with a ‘Funnel’ Target
Author(s) -
Afifi Amalina M.,
Nakano Shigeyuki,
Yamane Hideki,
Kimura Yoshiharu
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900406
Subject(s) - funnel , materials science , electrospinning , composite material , bundle , nozzle , funnel chest , fiber , protein filament , jet (fluid) , water jet , orientation (vector space) , polymer , mechanical engineering , geometry , mechanics , medicine , physics , surgery , engineering , mathematics
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 µm. 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.