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

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• 作者：Honglin Luo^a ; Guangyao Xiong^b ; Kaijing Ren^c ; Sudha R. Raman^d ; Zhe Liu^a ; Qiuping Li^b ; Chunying Ma^b ; Deying Li^b ; Yizao Wan^a ; ^{yzwantju@126.com" class="auth_mail}
• 关键词：A. Polymer&ndash ; matrix composites (PMCs) ; A. Textile composites ; B. Surface treatment ; E. Dielectric barrier discharge (DBD)
• 刊名：Surface and Coatings Technology
• 出版年：15 March, 2014
• 年：2014
• 卷：242
• 期：Complete
• 页码：1-7
• 全文大小：1704 K

文摘

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.