Needleless electrospinning : influences of fibre generator geometry

Niu, Haitao, Wang, Xungai and Lin, Tong 2011, Needleless electrospinning : influences of fibre generator geometry, Textile institute, vol. 103, no. 7, pp. 787-794.

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Title Needleless electrospinning : influences of fibre generator geometry
Author(s) Niu, Haitao
Wang, Xungai
Lin, Tong
Journal name Textile institute
Volume number 103
Issue number 7
Start page 787
End page 794
Total pages 8
Publisher Routledge
Place of publication Oxon, England
Publication date 2011-07
ISSN 0040-5000
1754-2340
Keyword(s) electric field
needleless electrospinning
spinneret geometry
PAN nanofibres
PVA nanofibres
Summary The fibre generator shape and dimension are key factors affecting the needleless electrospinning process and fibre fineness. In this work, cylinder with rounded rim, disc and ball were used as spinnerets to electrospin polyvinyl alcohol and polyacrylonitrile solutions. A finite element method was used to analyse how the spinneret geometry affected the electric field generated during electrospinning and the associated changes in fibre diameter and productivity. For cylinder spinnerets, increasing the rim radius reduced the discrepancy of electric field intensity between the cylinder end and middle area, which affected the fibre productivity. The electrospinning failed to operate when the rim radius was over 20 mm. With decreasing cylinder diameter, the electric field intensity in the middle area increased, improving the fibre productivity. Thinner disc spinnerets increased the electric field intensity, resulting in finer nanofibres and higher productivities. Ball spinnerets produced evenly distributed electric field, but failed to electrospin fibres when the diameters were below 60 mm. It has been found that strong and narrowly distributed electric field in the fibre-generating area can significantly facilitate the mass production of quality nanofibres.
Language eng
Field of Research 100707 Nanomanufacturing
091205 Functional Materials
091209 Polymers and Plastics
Socio Economic Objective 860406 Synthetic Fibres, Yarns and Fabrics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30040583

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