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Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide

In this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F(2)/N(2) mixture with 20% F(2) by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barri...

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Detalles Bibliográficos
Autores principales: Bian, Dongliang, Wu, Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403684/
https://www.ncbi.nlm.nih.gov/pubmed/30966640
http://dx.doi.org/10.3390/polym10060606
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author Bian, Dongliang
Wu, Yun
author_facet Bian, Dongliang
Wu, Yun
author_sort Bian, Dongliang
collection PubMed
description In this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F(2)/N(2) mixture with 20% F(2) by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barrier discharge (SDBD) at ambient atmospheric air. The dielectric lifetime of SDBD greatly extends after 60 min surface fluorination. In addition, optical emission spectroscopy (OES) results indicate that during the plasma processing, SDBD with fluorinated PI can obtain more stable plasma parameters, including gas temperature and electron temperature. Dielectric surface properties were further evaluated by infrared thermography, scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). It is considered that both physical and chemical effects lead to the extension of dielectric lifetime. The physical effect is reflected in low surface temperature and increased surface roughness, while the chemical effect is reflected in the graft of fluorine groups.
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spelling pubmed-64036842019-04-02 Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide Bian, Dongliang Wu, Yun Polymers (Basel) Article In this work, multi-layered polyimide (PI) films were surface fluorinated at 328 K and 0.05 MPa using F(2)/N(2) mixture with 20% F(2) by volume, for a fluorination time of 0, 30 and 60 min, respectively. Then, they were subjected to discharge plasma as barrier dielectrics of surface dielectric barrier discharge (SDBD) at ambient atmospheric air. The dielectric lifetime of SDBD greatly extends after 60 min surface fluorination. In addition, optical emission spectroscopy (OES) results indicate that during the plasma processing, SDBD with fluorinated PI can obtain more stable plasma parameters, including gas temperature and electron temperature. Dielectric surface properties were further evaluated by infrared thermography, scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). It is considered that both physical and chemical effects lead to the extension of dielectric lifetime. The physical effect is reflected in low surface temperature and increased surface roughness, while the chemical effect is reflected in the graft of fluorine groups. MDPI 2018-06-02 /pmc/articles/PMC6403684/ /pubmed/30966640 http://dx.doi.org/10.3390/polym10060606 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bian, Dongliang
Wu, Yun
Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title_full Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title_fullStr Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title_full_unstemmed Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title_short Enduring and Stable Surface Dielectric Barrier Discharge (SDBD) Plasma Using Fluorinated Multi-Layered Polyimide
title_sort enduring and stable surface dielectric barrier discharge (sdbd) plasma using fluorinated multi-layered polyimide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403684/
https://www.ncbi.nlm.nih.gov/pubmed/30966640
http://dx.doi.org/10.3390/polym10060606
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