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Polymers 2018, 10(1), 12;

Investigation of Conical Spinneret in Generating More Dense and Compact Electrospun Nanofibers

Department of Engineering Mathematics and Physics, Faculty of Engineering, Alexandria University, Elhadara, Alexandria 21544, Egypt
Center of Smart Nanotechnology and Photonics (CSNP), Smart Critical Infrastructure (SmartCI) Research Center, Alexandria University, Elhadara, Alexandria 21544, Egypt
USTAR Bio Innovations Center, Faculty of Science, Utah State University, Logan, UT 84341, USA
Department of Physics, Kuwait College of Science and Technology (KCST), Doha Road, 7th Ring Road, P.O. Box 27235, Safat 13133, Kuwait
Author to whom correspondence should be addressed.
Received: 18 November 2017 / Revised: 13 December 2017 / Accepted: 19 December 2017 / Published: 22 December 2017
(This article belongs to the Special Issue Electrospinning of Nanofibres)
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Electrospinning is an important, widely used process to generate nanofibers. However, there is still an open window for different designs of both spinneret and collector electrodes to be investigated. This paper introduces the impact of new design of conical spinneret electrode on the generated electrospun nanofibers. In this work, the conical feeder is used to generate electrospun Poly(vinyl alcohol) (PVA) nanofibers, and being compared to the traditional needle feeder at the same processing conditions. The jet’s mechanism is simulated using discrete bead model along with estimated calculations of both deposition area and fiber radius. The electric field distribution that is around the charged cone is analyzed. Based on both theoretical modeling and experimental measurements, a comparison of mean diameter, deposited area, and the thickness of generated nanofibers is presented related to both conical and needle electrodes. Conical feeder shows clearly compact nanofibers mat in terms of deposition area (spherical deposition of diameter ~6 cm) up to half-area of needle deposited nanofibers with high fiber density for the same time of the process. Moreover, the conical electrode is found to have privilege in terms of productivity rate and operation time. This study can be useful in generating localized nanofibers within different applications, such as biomedical tissue scaffolds, textile, and sensors. View Full-Text
Keywords: electrospinning; nanofibers; conical spinneret; electric field distribution; discrete bead model electrospinning; nanofibers; conical spinneret; electric field distribution; discrete bead model

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Hamed, A.; Shehata, N.; Elosairy, M. Investigation of Conical Spinneret in Generating More Dense and Compact Electrospun Nanofibers. Polymers 2018, 10, 12.

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