Influence of air addition on surface modification of polyethylene terephthalate treated by an atmospheric pressure argon plasma brush

Jiacun WU (武珈存); Kaiyue WU (吴凯玥); Junyu CHEN (陈俊宇); Caihong SONG (宋彩虹); Pengying JIA (贾鹏英); Xuechen LI (李雪辰)

doi:10.1088/2058-6272/ac0109

Plasma Science and Technology > 2021 > 23(8): 85504-085504. > DOI: 10.1088/2058-6272/ac0109

Jiacun WU (武珈存), Kaiyue WU (吴凯玥), Junyu CHEN (陈俊宇), Caihong SONG (宋彩虹), Pengying JIA (贾鹏英), Xuechen LI (李雪辰). Influence of air addition on surface modification of polyethylene terephthalate treated by an atmospheric pressure argon plasma brush[J]. Plasma Science and Technology, 2021, 23(8): 85504-085504. DOI: 10.1088/2058-6272/ac0109

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Influence of air addition on surface modification of polyethylene terephthalate treated by an atmospheric pressure argon plasma brush

¹ College of Physics Science and Technology, Hebei University, Baoding 071002, People's Republic of China
² Institute of Life Science and Green Development, Hebei University, Baoding 071002, People's Republic of China

Funds: This work was supported by National Natural Science Foundation of China (Nos. 11875121, 11575050 and 51977057); the Midwest Universities Comprehensive Strength Promotion Project, the Natural Science Foundation of Hebei Province, China (Nos. A2019201100 and A2020201025); College Hundred Outstanding Innovative Talent Support Program of Hebei Education Bureau (No. SLRC2017021), Post-graduate's Innovation Fund Project of Hebei Province (Nos. CXZZBS2019023 and CXZZBS2019029), the Natural Science Interdisciplinary Research Program of Hebei University (No. DXK201908), and Post-graduate's Innovation Fund Project of Hebei University (No. HBU2021bs011).

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Received Date: December 16, 2020
Revised Date: May 11, 2021
Accepted Date: May 12, 2021

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Abstract

Abstract

An atmospheric pressure argon plasma brush with air addition is employed to treat polyethylene terephthalate (PET) surface in order to improve its hydrophilicity. Results indicate that the plasma plume generated by the plasma brush presents periodically pulsed current despite a direct current voltage is applied. Voltage−current curve reveals that there is a transition from a Townsend discharge regime to a glow one during one discharge period. Optical emission spectrum indicates that more oxygen atoms are produced in the plume with increasing air content, which leads to the better hydrophilicity of PET surface after plasma treatment. Besides, an aging behavior is also observed. The hydrophilicity improvement is attributed to the production of oxygen functional groups, which increase in number with increasing air content. Moreover, some grain-like structures are observed on the treated PET surface, and its mean roughness increases with increasing air content. These results are of great importance for the hydrophilicity improvement of PET surface with a large scale.
- plasma brush,
- water contact angle,
- surface modification,
- plasma treatment,
- hydrophilicity improvement

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Influence of air addition on surface modification of polyethylene terephthalate treated by an atmospheric pressure argon plasma brush