Influence of Salts on Electrospinning of Aqueous and Nonaqueous Polymer SolutionsReport as inadecuate




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Journal of Nanomaterials - Volume 2015 2015, Article ID 134251, 12 pages -

Research ArticleDepartment of Nonwovens and Nanofibrous Materials, Faculty of Textile Engineering, Technical University of Liberec, Studentska 1402-2, 46117 Liberec, Czech Republic

Received 7 October 2014; Revised 21 December 2014; Accepted 8 January 2015

Academic Editor: Yuqin Wan

Copyright © 2015 Fatma Yalcinkaya et al. 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.

Abstract

A roller electrospinning system was used to produce nanofibres by using different solution systems. Although the process of electrospinning has been known for over half a century, knowledge about spinning behaviour is still lacking. In this work, we investigated the effects of salt for two solution systems on spinning performance, fibre diameter, and web structure. Polyurethane PU and polyethylene oxide PEO were used as polymer, and tetraethylammonium bromide and lithium chloride were used as salt. Both polymer and salt concentrations had a noteworthy influence on the spinning performance, morphology, and diameter of the nanofibres. Results indicated that adding salt increased the spinnability of PU. Salt created complex bonding with dimethylformamide solvent and PU polymer. Salt added to PEO solution decreased the spinning performance of fibres while creating thin nanofibres, as explained by the leaky dielectric model.





Author: Fatma Yalcinkaya, Baturalp Yalcinkaya, and Oldrich Jirsak

Source: https://www.hindawi.com/



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