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Volume 17
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10.3390/polym17111519
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Article

Surface Modification of Poly(ethylene-alt-tetrafluoroethylene) by Atmospheric Pressure Dielectric Barrier Discharge Plasma

by
Xiaoshan Yan
1,†,
Zuohui Ji
2,†,
Xiaopeng Li
1,
Yue Zhao
1,
Zhen Li
1,
Zhai Chen
1 and
Heguo Li
1,*
1
State Key Laboratory of NBC Protection for Civilian, Institute of Chemical Defense, Beijing 100191, China
2
Research Institute of Aerospace Special Materials and Processing Technology, Beijing 100074, China
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Polymers 2025, 17(11), 1519; https://doi.org/10.3390/polym17111519
Submission received: 21 February 2025 / Revised: 13 March 2025 / Accepted: 26 March 2025 / Published: 29 May 2025
(This article belongs to the Section Polymer Applications)
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Abstract

The fluororesin membrane emerges as an ideal chemical-protective clothing material due to its excellent permeation resistance. However, using a fluororesin membrane with a low surface energy for compounding fabrics is very challenging. Herein, we demonstrate a strategy to modify the surface of a poly(ethylene-alt-tetrafluoroethylene) (ETFE) membrane by the atmospheric pressure dielectric barrier discharge (DBD) of plasma under different working voltages, processing times, and concentrations of acrylic acid (AA) in a helium (He) atmosphere. The increase in the hydrophilicity of the ETFE membrane is confirmed by the wettability test, which shows a significant decrease in the water contact angle, from 96° to 50°, after plasma modification. The interfacial T-peel strength of an ETFE membrane composited with polyester fabric increased from 0.53 N/cm to 13.64 N/cm after plasma modification. Significantly, the T-peel strength of the composite using a modified ETFE membrane with ultrasonic washing could still reach 11.75 N/cm. Various characterization methods clearly disclosed the physical and chemical changes on the ETFE membrane surface, such as introducing the polar -COOH group at a nano-level, improving the roughness, decreasing the ratios of the F/C element, and increasing the ratios of the O/C element, suggesting using nano-level grafted polyacrylic acid (g-PAA) on the surface of the membrane by DBD.
Keywords: ETFE membrane; DBD plasma; surface modification; hydrophilicity; peel strength ETFE membrane; DBD plasma; surface modification; hydrophilicity; peel strength

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MDPI and ACS Style

Yan, X.; Ji, Z.; Li, X.; Zhao, Y.; Li, Z.; Chen, Z.; Li, H. Surface Modification of Poly(ethylene-alt-tetrafluoroethylene) by Atmospheric Pressure Dielectric Barrier Discharge Plasma. Polymers 2025, 17, 1519. https://doi.org/10.3390/polym17111519

AMA Style

Yan X, Ji Z, Li X, Zhao Y, Li Z, Chen Z, Li H. Surface Modification of Poly(ethylene-alt-tetrafluoroethylene) by Atmospheric Pressure Dielectric Barrier Discharge Plasma. Polymers. 2025; 17(11):1519. https://doi.org/10.3390/polym17111519

Chicago/Turabian Style

Yan, Xiaoshan, Zuohui Ji, Xiaopeng Li, Yue Zhao, Zhen Li, Zhai Chen, and Heguo Li. 2025. "Surface Modification of Poly(ethylene-alt-tetrafluoroethylene) by Atmospheric Pressure Dielectric Barrier Discharge Plasma" Polymers 17, no. 11: 1519. https://doi.org/10.3390/polym17111519

APA Style

Yan, X., Ji, Z., Li, X., Zhao, Y., Li, Z., Chen, Z., & Li, H. (2025). Surface Modification of Poly(ethylene-alt-tetrafluoroethylene) by Atmospheric Pressure Dielectric Barrier Discharge Plasma. Polymers, 17(11), 1519. https://doi.org/10.3390/polym17111519

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