Air DBD plasma treatment on three-dimensional braided carbon fiber-reinforced PEEK composites for enhancement of in vitro bioactivity

作者：Luo, Honglin; Xiong, Guangyao; Ren, Kaijing; Raman, Sudha R.; Liu, Zhe; Li, Qiuping; Ma, Chunying; Li, Deying; Wan, Yizao^*

来源：Surface and Coatings Technology, 2014, 242: 1-7.

DOI：10.1016/j.surfcoat.2013.12.069

• Polymer-matrix composites (PMCs)
• Textile composites
• Surface treatment
• Dielectric barrier discharge (DBD)

Surface treatment for bio-inert PEEK and its composites is required to broaden their applications in biomedical fields. In this work, a dielectric barrier discharge (DBD) plasma treatment in ambient air was performed on the surface of a three-dimensional braided carbon fiber-reinforced PEEK (C-3D/PEEK) composite. The changes in surface chemistry and topography after DBD treatment were examined using water contact angle measurement, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Apatite formation on the DBD-treated C-3D/PEEK composite was assessed using SEM after immersion in a simulated body fluid (SBF) to determine its in vitro bioactivity. It was shown that DBD plasma treatment led to a significant decrease in water contact angle, an increase in roughness and the creation of new oxygen related functional groups on C-3D/PEEK composite. These changes were found to result in a significant improvement in its in vitro bioactivity. The results presented here clearly indicate that DBD plasma treatment in air is capable of modifying the surface of C-3D/PEEK composite such that the treated surface changes from bio-inert to bioactive.

• 出版日期2014-3-15
• 单位天津大学; 天津市天津医院