niu-upwardneedleless-2012.pdf (266.5 kB)
Upward needleless electrospinning of nanofibers
journal contribution
posted on 2012-07-01, 00:00 authored by Haitao Niu, Xungai Wang, Tong LinPolyacrylonitrile (PAN) nanofibers were prepared by a needleless electrospinning method using three rotating fiber generators, cylinder, disc and coil. The effects of the spinneret shape on the electrospinning process and resultant fiber morphology were examined. The disc spinneret needed the lowest voltage to initiate fiber formation, followed by the coil and cylinder. Compared to cylinder, the disc and coil produced finer fibers with narrower diameter distribution. The productivity of a coil was 23 g/hr, which was much larger than that of the cylinder spinneret having the same length and diameter. Finite elementary method was used to analyze the electric field. Stronger electric field was found to be formed on disc and coil surface, which concentrated on the disc circumferential edge and coil wire surface, respectively. For cylinder, the high intensity electric field was mainly concentrated on the end area. Concentrated electric field on the fiber generating surface could be used to explain the better electrospinning performance of coil, which may form a new concept for designing needleless electrospinning spinnerets.
History
Journal
Journal of engineered fibers and fabricsVolume
7Issue
3Season
Special issue - FibersPagination
17 - 22Publisher
Association of the Nonwoven Fabrics Industry (I N D A)Location
Cary, N. C.ISSN
1558-9250Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2012, Association of the Nonwoven Fabrics Industry (I N D A)Usage metrics
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