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Open AccessEditor’s ChoiceArticle

The Relationships between the Working Fluids, Process Characteristics and Products from the Modified Coaxial Electrospinning of Zein

1
School of Materials Science & Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China
2
Caritas Institute of Higher Education, 2 Chui Ling Lane, Tseung Kwan O, New Territories, Hong Kong 999077, China
*
Authors to whom correspondence should be addressed.
Polymers 2019, 11(8), 1287; https://doi.org/10.3390/polym11081287
Received: 3 April 2019 / Revised: 3 July 2019 / Accepted: 11 July 2019 / Published: 1 August 2019
(This article belongs to the Special Issue Natural Fibres and their Composites)
The accurate prediction and manipulation of nanoscale product sizes is a major challenge in material processing. In this investigation, two process characteristics were explored during the modified coaxial electrospinning of zein, with the aim of understanding how this impacts the products formed. The characteristics studied were the spreading angle at the unstable region (θ) and the length of the straight fluid jet (L). An electrospinnable zein core solution was prepared and processed with a sheath comprising ethanolic solutions of LiCl. The width of the zein nanoribbons formed (W) was found to be more closely correlated with the spreading angle and straight fluid jet length than with the experimental parameters (the electrolyte concentrations and conductivity of the shell fluids). Linear equations W = 546.44L − 666.04 and W = 2255.3θ − 22.7 could be developed with correlation coefficients of Rwl2 = 0.9845 and R2 = 0.9924, respectively. These highly linear relationships reveal that the process characteristics can be very useful tools for both predicting the quality of the electrospun products, and manipulating their sizes for functional applications. This arises because any changes in the experimental parameters would have an influence on both the process characteristics and the solid products’ properties. View Full-Text
Keywords: coaxial electrospinning; length of straight fluid jet; spreading angle; nanoribbons; linear relationship coaxial electrospinning; length of straight fluid jet; spreading angle; nanoribbons; linear relationship
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MDPI and ACS Style

Wang, M.; Hai, T.; Feng, Z.; Yu, D.-G.; Yang, Y.; Annie Bligh, S. The Relationships between the Working Fluids, Process Characteristics and Products from the Modified Coaxial Electrospinning of Zein. Polymers 2019, 11, 1287.

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