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Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma

Fluorine resin membranes with excellent chemical resistance have great potential for the application of high-performance chemical protective clothing. However, it is difficult to integrate fluorine resins into other materials such as fabrics due to their lower surface energy and poor bondability, ma...

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Autores principales: Ji, Zuohui, Zhao, Yue, Zhang, Min, Li, Xiaopeng, Li, Heguo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9147111/
https://www.ncbi.nlm.nih.gov/pubmed/35629836
http://dx.doi.org/10.3390/membranes12050510
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author Ji, Zuohui
Zhao, Yue
Zhang, Min
Li, Xiaopeng
Li, Heguo
author_facet Ji, Zuohui
Zhao, Yue
Zhang, Min
Li, Xiaopeng
Li, Heguo
author_sort Ji, Zuohui
collection PubMed
description Fluorine resin membranes with excellent chemical resistance have great potential for the application of high-performance chemical protective clothing. However, it is difficult to integrate fluorine resins into other materials such as fabrics due to their lower surface energy and poor bondability, making the fabrication of composite fabrics and the further seal splicing challenging. In this study, atmospheric pressure dielectric barrier discharge (DBD) plasma in helium (He) and helium/acrylic acid (He/AA) mixture atmospheres were used to modify two kinds of fluorine resins, ethylene tetrafluoroethylene (ETFE) and polytetrafluoroethylene (PTFE) membrane. The surface chemical properties, physical morphology, hydrophilicity and adhesion strength of the fluororesin membranes before and after plasma treatments were systematically analyzed. The results showed that the plasma treatment can modify the membrane surface at the nanoscale level without damaging the main body of the membrane. The hydrophilicity of the plasma-treated membrane was improved with the water contact angle decreasing from 95.83° to 49.9° for the ETFE membrane and from 109.9° to 67.8° for the PTFE membrane, respectively. The He plasma creates active sites on the membrane surface as well as etching the membrane surface, increasing the surface roughness. The He/AA plasma treatment introduces two types of polyacrylic acid (PAA)—deposited polyacrylic acid (d-PAA) and grafted polyacrylic acid (g-PAA)—on the membrane surface. Even after ultrasonic washing with acetone, g-PAA still existed stably and, as a result, improved the polarity and adhesion strength of fluororesin membranes. This work provides useful insights into the modification mechanism of DBD plasma on fluorine resins, with implications for developing effective strategies of integrating fluorine resin membrane to chemical protective clothing fabrics.
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spelling pubmed-91471112022-05-29 Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma Ji, Zuohui Zhao, Yue Zhang, Min Li, Xiaopeng Li, Heguo Membranes (Basel) Article Fluorine resin membranes with excellent chemical resistance have great potential for the application of high-performance chemical protective clothing. However, it is difficult to integrate fluorine resins into other materials such as fabrics due to their lower surface energy and poor bondability, making the fabrication of composite fabrics and the further seal splicing challenging. In this study, atmospheric pressure dielectric barrier discharge (DBD) plasma in helium (He) and helium/acrylic acid (He/AA) mixture atmospheres were used to modify two kinds of fluorine resins, ethylene tetrafluoroethylene (ETFE) and polytetrafluoroethylene (PTFE) membrane. The surface chemical properties, physical morphology, hydrophilicity and adhesion strength of the fluororesin membranes before and after plasma treatments were systematically analyzed. The results showed that the plasma treatment can modify the membrane surface at the nanoscale level without damaging the main body of the membrane. The hydrophilicity of the plasma-treated membrane was improved with the water contact angle decreasing from 95.83° to 49.9° for the ETFE membrane and from 109.9° to 67.8° for the PTFE membrane, respectively. The He plasma creates active sites on the membrane surface as well as etching the membrane surface, increasing the surface roughness. The He/AA plasma treatment introduces two types of polyacrylic acid (PAA)—deposited polyacrylic acid (d-PAA) and grafted polyacrylic acid (g-PAA)—on the membrane surface. Even after ultrasonic washing with acetone, g-PAA still existed stably and, as a result, improved the polarity and adhesion strength of fluororesin membranes. This work provides useful insights into the modification mechanism of DBD plasma on fluorine resins, with implications for developing effective strategies of integrating fluorine resin membrane to chemical protective clothing fabrics. MDPI 2022-05-10 /pmc/articles/PMC9147111/ /pubmed/35629836 http://dx.doi.org/10.3390/membranes12050510 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ji, Zuohui
Zhao, Yue
Zhang, Min
Li, Xiaopeng
Li, Heguo
Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title_full Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title_fullStr Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title_full_unstemmed Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title_short Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma
title_sort surface modification of etfe membrane and ptfe membrane by atmospheric dbd plasma
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9147111/
https://www.ncbi.nlm.nih.gov/pubmed/35629836
http://dx.doi.org/10.3390/membranes12050510
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