Surface Modification of Cyclic Olefin Copolymer by Air/CF4 Radio Frequency Discharge Plasma in Droplet Microfluidic

被引：0
|
作者：
Li Y. [1 ]
Zheng Y. [1 ]
Liang S. [1 ,2 ]
Zhang H. [2 ]
Lin J. [2 ]
Wang S. [2 ]
Wan Z. [1 ]
机构：
[1] School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou
[2] Guangdong Shunde Innovative Design and Research Institute, Foshan
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2021年 / 37卷 / 07期
关键词：
Cyclic olefin copolymer; Droplet microfluidic; Plasma; Surface modification; X-ray photoelectron spectroscopy;
D O I：
10.16865/j.cnki.1000-7555.2021.0162
中图分类号：
学科分类号：
摘要：
Cyclic olefin copolymer (COC) is a new material for microfluidic chip. Although its hydrophobicity can ensure the formation of water-in-oil droplets, greatly reduces the bonding strength of chips. Therefore, COC surface was modified by air /CF4 radio frequency (RF) discharge low temperature plasma, and COC surface with high hydrophilicity to high hydrophobicity was successfully prepared. The treated surface was characterized by contact angle measurement, XPS, SEM and FT-IR. The effects of the plasma surface modification on the droplet formation, flow behavior and bonding strength of COC chips were studied by droplet formation experiment and peeling experiment. In addition, the timeliness of the COC surface modification was also monitored. The results show that after air plasma treatment, the cohesiveness and wettability of the chips are significantly improved, and oil-in-water droplets are generated. After being activated by air plasma and then treated by CF4 plasma, the hydrophobicity of the chips exceeds the intrinsic value and water-in-oil droplets are regenerated. Therefore, the plasma modification can be an effective method to strengthen the chip structure without affecting the chip function. In addition, the biological application of the modified chips is worth further exploring. © 2021, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
引用
收藏
页码：162 / 169
页数：7
相关论文
共 14 条
  • [1] Jacobs T, Morent R, Geyter N D, Et al., Plasma Surface Modification of Biomedical Polymers: Influence on Cell-Material Interaction, Plasma Chemistry & Plasma Processing, 32, pp. 1039-1073, (2012)
  • [2] Roy S, Yue C Y, Lam Y C., Influence of plasma surface treatment on thermal bonding and flow behavior in cyclic olefin copolymer (COC) based microfluidic devices, Vacuum, 85, pp. 1102-1104, (2011)
  • [3] Kecili S, Tekin H C., Adhesive bonding strategies to fabricate high-strength and transparent 3D printed microfluidic device, Biomicrofluidics, 14, (2020)
  • [4] Duske K, Jablonowski L, Koban I, Et al., Cold atmospheric plasma in combination with mechanical treatment improves osteoblast growth on biofilm covered titanium discs, Biomaterials, 52, pp. 327-334, (2015)
  • [5] Yu Z, Lu L J, Lu L X, Et al., Preparation and characterization of anti-oxidation packaging films based on poly (acrylic acid) grafting polypropylene surface, Polymer Materials Science & Engineering, 36, 7, pp. 134-139, (2020)
  • [6] Ellinas K, Tsougeni K, Petrou P S, Et al., Three-dimensional plasma micro-nanotextured cyclo-olefin-polymer surfaces for biomolecule immobilization and environmentally stable superhydrophobic and superoleophobic behavior, Chemical Engineering Journal, 300, pp. 394-403, (2016)
  • [7] Tsioptsias C, Panayiotou C., Thermal stability and hydrophobicity enhancement of wood through impregnation with aqueous solutions and supercritical carbon dioxide, Journal of Materials Science, 46, pp. 5406-5411, (2011)
  • [8] Altay L, Bozaci E, Atagur M, Et al., The effect of atmospheric plasma treatment of recycled carbon fiber at different plasma powers on recycled carbon fiber and its polypropylene composites, Journal of Applied Polymer Science, 136, (2019)
  • [9] Rezaei F, Dickey M D, Bourham M, Et al., Surface modification of PET film via a large area atmospheric pressure plasma: an optical analysis of the plasma and surface characterization of the polymer film, Surface and Coatings Technology, 309, pp. 371-381, (2017)
  • [10] Makamba H, Kim J H, Lim K, Et al., Surface modification of poly(dimethylsiloxane) microchannels, Electrophoresis, 24, pp. 3607-3619, (2010)
12