Development of Mixing Methods of UHMWPE/Carbon Nanotubes (CNT) Composites for Use in Artificial Joints

• Published in: Key engineering materials 2017-06, Vol.739, p.81-86
• Main Authors: Baena, Juan Carlos, Tenison, Nicholas, Peng, Zhong Xiao, Yu, Jacky
• Format: Article
• Language: English
• Subjects: Artificial joints; Ball milling; Coefficient of friction; Hardness; Methods; Multi wall carbon nanotubes; Nanotubes; Production methods; Surgical implants; Ultra high molecular weight polyethylene; Wear
• ISSN: 1013-9826; 1662-9795; 1662-9795
• DOI: 10.4028/www.scientific.net/KEM.739.81

This study focused on the mixing methods used in the manufacture of ultra-high molecular weight polyethylene (UHMWPE) reinforced by multi-walled carbon nanotubes (MWCNTs) and how these methods enhance the wear performance of the composite. Two mixing methods, ball milling and ultra-sonication, were used in this study, and the most effective forms of these mixing methods were analysed to allow an effective comparison. The performance of the mixing methods was evaluated through a comparison of wear volume loss, coefficient of friction, and hardness. The optimal power and mixing time for sonication in this study was determined and composites with 0.5% CNTs w/w concentration were conformed. It was evidenced that the mixing process influence the mechanical and wear performance of UHMWPE / MWCNTs composites and ultrasonication was identified as an effective mixing method that improves significantly the wear performance of the composite.