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Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers

Physical properties of pre-electrospinning polymer solutions play a key role in electrospinning as they strongly determine the morphology of the obtained electrospun nanofibers. In this work, an atmospheric-pressure argon plasma directly submerged in the liquid-phase was used to modify the physical...

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Autores principales: Rezaei, Fatemeh, Nikiforov, Anton, Morent, Rino, De Geyter, Nathalie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797159/
https://www.ncbi.nlm.nih.gov/pubmed/29396416
http://dx.doi.org/10.1038/s41598-018-20714-5
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author Rezaei, Fatemeh
Nikiforov, Anton
Morent, Rino
De Geyter, Nathalie
author_facet Rezaei, Fatemeh
Nikiforov, Anton
Morent, Rino
De Geyter, Nathalie
author_sort Rezaei, Fatemeh
collection PubMed
description Physical properties of pre-electrospinning polymer solutions play a key role in electrospinning as they strongly determine the morphology of the obtained electrospun nanofibers. In this work, an atmospheric-pressure argon plasma directly submerged in the liquid-phase was used to modify the physical properties of poly lactic acid (PLA) spinning solutions in an effort to improve their electrospinnability. The electrical characteristics of the plasma were investigated by two methods; V-I waveforms and Q-V Lissajous plots while the optical emission characteristics of the plasma were also determined using optical emission spectroscopy (OES). To perform a complete physical characterization of the plasma-modified polymer solutions, measurements of viscosity, surface tension, and electrical conductivity were performed for various PLA concentrations, plasma exposure times, gas flow rates, and applied voltages. Moreover, a fast intensified charge-couple device (ICCD) camera was used to image the bubble dynamics during the plasma treatments. In addition, morphological changes of PLA nanofibers generated from plasma-treated PLA solutions were observed by scanning electron microscopy (SEM). The performed plasma treatments were found to induce significant changes to the main physical properties of the PLA solutions, leading to an enhancement of electrospinnability and an improvement of PLA nanofiber formation.
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spelling pubmed-57971592018-02-12 Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers Rezaei, Fatemeh Nikiforov, Anton Morent, Rino De Geyter, Nathalie Sci Rep Article Physical properties of pre-electrospinning polymer solutions play a key role in electrospinning as they strongly determine the morphology of the obtained electrospun nanofibers. In this work, an atmospheric-pressure argon plasma directly submerged in the liquid-phase was used to modify the physical properties of poly lactic acid (PLA) spinning solutions in an effort to improve their electrospinnability. The electrical characteristics of the plasma were investigated by two methods; V-I waveforms and Q-V Lissajous plots while the optical emission characteristics of the plasma were also determined using optical emission spectroscopy (OES). To perform a complete physical characterization of the plasma-modified polymer solutions, measurements of viscosity, surface tension, and electrical conductivity were performed for various PLA concentrations, plasma exposure times, gas flow rates, and applied voltages. Moreover, a fast intensified charge-couple device (ICCD) camera was used to image the bubble dynamics during the plasma treatments. In addition, morphological changes of PLA nanofibers generated from plasma-treated PLA solutions were observed by scanning electron microscopy (SEM). The performed plasma treatments were found to induce significant changes to the main physical properties of the PLA solutions, leading to an enhancement of electrospinnability and an improvement of PLA nanofiber formation. Nature Publishing Group UK 2018-02-02 /pmc/articles/PMC5797159/ /pubmed/29396416 http://dx.doi.org/10.1038/s41598-018-20714-5 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Rezaei, Fatemeh
Nikiforov, Anton
Morent, Rino
De Geyter, Nathalie
Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title_full Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title_fullStr Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title_full_unstemmed Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title_short Plasma Modification of Poly Lactic Acid Solutions to Generate High Quality Electrospun PLA Nanofibers
title_sort plasma modification of poly lactic acid solutions to generate high quality electrospun pla nanofibers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5797159/
https://www.ncbi.nlm.nih.gov/pubmed/29396416
http://dx.doi.org/10.1038/s41598-018-20714-5
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