npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041
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Research Paper

New Phys.: Sae Mulli 2020; 70: 531-534

Published online June 30, 2020 https://doi.org/10.3938/NPSM.70.531

Copyright © New Physics: Sae Mulli.

Effects of Electrospinning Nozzle size and Voltage on Polyvinylpyrrolidone Fiber Structure Formation

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

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.

Keywords: Electrospinning, Polyvinylpyrrolidone, Fiber structure, Size distribution

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