Needleless electrospinning of uniform nanofibers using spiral coil spinnerets

Wang, Xin and Niu, Haitao and Wang, Xungai and Lin, Tong (2012) Needleless electrospinning of uniform nanofibers using spiral coil spinnerets. Journal of Nanomaterials, 2012. pp. 1-9. ISSN 1687-4110

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Abstract

Polyvinyl alcohol nanofibers were prepared by a needleless electrospinning technique using a rotating spiral wire coil as spinneret. The influences of coil dimension (e.g., coil length, coil diameter, spiral distance, and wire diameter) and operating parameters (e.g., applied voltage and spinning distance) on electrospinning process, nanofiber diameter, and fiber productivity were examined. It was found that the coil dimension had a considerable influence on the nanofiber production rate, but minor effect on the fiber diameter. The fiber production rate increased with the increased coil length or coil diameter, or the reduced spiral distance or wire diameter. Higher applied voltage or shorter collecting distance also improved the fiber production rate but had little influence on the fiber diameter. Compared with the conventional needle electrospinning, the coil electrospinning produced finer fibers with a narrower diameter distribution. A finite element method was used to analyze the electric field on the coil surface and in electrospinning zone. It was revealed that the high electric field intensity was concentrated on the coil surface, and the intensity was highly dependent on the coil dimension, which can be used to explain the electrospinning performances of coils. In addition, PAN nanofibers were prepared using the same needleless electrospinning technique to verify the improvement in productivity.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2012 Xin Wang et al. This is an open access article distributed under the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 15 Jul 2014 02:47
Last Modified: 02 Feb 2017 02:08
Uncontrolled Keywords: applied voltages; coil dimensions; diameter distributions; electrospinning process; electrospinning techniques; fiber diameters; fiber production; fiber productivity; high electric fields; operating parameters; production rates; spinning distance; spiral coils; wire diameter; wire-coils
Fields of Research : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030305 Polymerisation Mechanisms
09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
10 Technology > 1007 Nanotechnology > 100706 Nanofabrication, Growth and Self Assembly
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1155/2012/785920
URI: http://eprints.usq.edu.au/id/eprint/25493

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