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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/5/510 |
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| author | Zuohui Ji Yue Zhao Min Zhang Xiaopeng Li Heguo Li |
| author_facet | Zuohui Ji Yue Zhao Min Zhang Xiaopeng Li Heguo Li |
| author_sort | Zuohui Ji |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T03:26:58Z |
| format | Article |
| id | doaj.art-5f2830bd4ca043b8aaf7f9b5046780c0 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T03:26:58Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-5f2830bd4ca043b8aaf7f9b5046780c02023-11-23T12:05:50ZengMDPI AGMembranes2077-03752022-05-0112551010.3390/membranes12050510Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD PlasmaZuohui Ji0Yue Zhao1Min Zhang2Xiaopeng Li3Heguo Li4State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, ChinaState Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, ChinaState Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, ChinaState Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, ChinaState Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, ChinaFluorine 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.https://www.mdpi.com/2077-0375/12/5/510DBD plasmasurface modificationhydrophilicityadhesion strengthfluorine resin membrane |
| spellingShingle | Zuohui Ji Yue Zhao Min Zhang Xiaopeng Li Heguo Li Surface Modification of ETFE Membrane and PTFE Membrane by Atmospheric DBD Plasma Membranes DBD plasma surface modification hydrophilicity adhesion strength fluorine resin membrane |
| 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 | DBD plasma surface modification hydrophilicity adhesion strength fluorine resin membrane |
| url | https://www.mdpi.com/2077-0375/12/5/510 |
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