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https://doi.org/10.3938/NPSM.70.531
Effects of Electrospinning Nozzle size and Voltage on Polyvinylpyrrolidone Fiber Structure Formation
New Phys.: Sae Mulli 2020; 70: 531~534
Published online June 30, 2020;  https://doi.org/10.3938/NPSM.70.531
© 2020 New Physics: Sae Mulli.

In-Bo SHIM, Taejoon KOUH*

Department of Physics, Kookmin University, Seoul 02707, Korea
Correspondence to: tkouh@kookmin.ac.kr
Received February 25, 2020; Revised April 22, 2020; Accepted April 22, 2020.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The formation of a polyvinylpyrrolidone fiber via electrospinning is investigated. Especially, the effects of the nozzle size and voltage during electrospinning are studied. For the experiment, three different nozzle sizes are used for fiber production under electrospinning at voltages of 5, 10, and 15 kV. A careful examination of the scanning electron micrographs reveals that both are important factors in determining the dimension and the uniformity of the electrospun fibers. A smaller nozzle size with a higher voltage is preferable for forming a fiber structure with a smaller diameter, down to sub-microns. Also, a high electrospinning voltage tends to lead to the uniform formation of the fiber structure, as indicated by the coefficient of variation in the fiber diameter distribution. The study presented here can help to guide and optimize the electrospinning process for the controlled production of fiber structure.
PACS numbers: 81.05.Lg, 81.07.$-$b, 81.16.$-$c
Keywords: Electrospinning, Polyvinylpyrrolidone, Fiber structure, Size distribution


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