Transfer film effects induced by 3D-printed polyether-ether-ketone with excellent tribological properties for joint prosthesis

IF 8.1 1区医学 Q1 ENGINEERING, BIOMEDICAL

Bio-Design and Manufacturing Pub Date : 2023-11-28 DOI:10.1007/s42242-023-00258-y

Yang Li, Jibao Zheng, Changning Sun, Dichen Li

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Abstract

Based on the building principle of additive manufacturing, printing orientation mainly determines the tribological properties of joint prostheses. In this study, we created a polyether-ether-ketone (PEEK) joint prosthesis using fused filament fabrication and investigated the effects of printing orientation on its tribological properties using a pin-on-plate tribometer in 25% newborn calf serum. An ultrahigh molecular weight polyethylene transfer film is formed on the surface of PEEK due to the mechanical capture of wear debris by the 3D-printed groove morphology, which is significantly impacted by the printing orientation of PEEK. When the printing orientation was parallel to the sliding direction of friction, the number and size of the transfer film increased due to higher steady stress. This transfer film protected the matrix and reduced the friction coefficient and wear rate of friction pairs by 39.13% and 74.33%, respectively. Furthermore, our findings provide a novel perspective regarding the role of printing orientation in designing knee prostheses, facilitating its practical applications.

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具有优异摩擦学性能的3d打印聚醚酮诱导关节假体转移膜效应

基于增材制造的构建原理，打印方向主要决定了关节假体的摩擦学性能。在这项研究中，我们使用熔融长丝制造了聚醚醚酮(PEEK)关节假体，并在25%新生牛犊血清中使用针板摩擦计研究了打印方向对其摩擦学性能的影响。由于3d打印的凹槽形态对磨损碎片进行机械捕获，在PEEK表面形成超高分子量聚乙烯转移膜，这一过程受PEEK打印方向的显著影响。当印刷方向与摩擦滑动方向平行时，由于稳定应力增大，转移膜的数量和尺寸增大。该转移膜保护了基体，使摩擦副的摩擦系数和磨损率分别降低了39.13%和74.33%。此外，我们的研究结果为打印取向在膝关节假体设计中的作用提供了一个新的视角，促进了其实际应用。图形抽象

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来源期刊

Bio-Design and Manufacturing Materials Science-Materials Science (miscellaneous)

CiteScore

13.30

自引率

7.60%

发文量

148

期刊介绍： Bio-Design and Manufacturing reports new research, new technology and new applications in the field of biomanufacturing, especially 3D bioprinting. Topics of Bio-Design and Manufacturing cover tissue engineering, regenerative medicine, mechanical devices from the perspectives of materials, biology, medicine and mechanical engineering, with a focus on manufacturing science and technology to fulfil the requirement of bio-design.