An Estimate of the Onset of Beadless Character of Electrospun Nanofibers Using Rheological Characterization
| Autor: | Jana Zelenkova, Lenka Lovecka, Petra Peer, Petr Filip |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Intrinsic viscosity 02 engineering and technology 010402 general chemistry 01 natural sciences Viscoelasticity Article lcsh:QD241-441 chemistry.chemical_compound Rheology lcsh:Organic chemistry PVF-co-HFP Composite material electrospinning viscoelasticity chemistry.chemical_classification Ethylene oxide Phase angle General Chemistry Polymer 021001 nanoscience & nanotechnology Electrospinning 0104 chemical sciences chemistry Nanofiber PEO PVB specific viscosity 0210 nano-technology |
| Zdroj: | Polymers Polymers, Vol 13, Iss 265, p 265 (2021) Volume 13 Issue 2 |
| ISSN: | 2073-4360 |
| Popis: | Electrospinning represents the very effective process of producing nanofibrous mats. This process is influenced by a number of mutually and strongly interlaced entry parameters (characteristics of polymer, solvent, process parameters) and their participation in the resulting nanofiber quality. The appearance of nanofibers is a result of the necessary primary experimental parameter setting within an acceptable range. However, finer analysis of nanofiber quality depends on the proper choice of these individual factors. The aim of this contribution is to evaluate one of the key factors—polymer concentration—with respect to the presence or absence of bead formation. This passage can be approximated by rheological oscillatory measurements when a sudden decrease in phase angle indicates this change. It replaces otherwise time-and cost-consuming trial-and-error experiments. This approach was tested using three different materials: solutions of poly(vinylidene fluoride-co-hexafluoropropylene), poly(vinyl butyral), and poly(ethylene oxide). © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Ministry of Education, Youth and Sports of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic [LTC 19034]; COST ActionsEuropean Cooperation in Science and Technology (COST) [CA17107] European Cooperation in Science and Technology, COST: CA17107; Ministerstvo Školství, Mládeže a Tělovýchovy, MŠMT: LTC 19034 |
| Databáze: | OpenAIRE |
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