Sun Xuhui, Yu Chengcheng, Zhang Lin, Cao Jingcao, Kaleli Emrullah Hakan, Xie Guoxin
State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
Jihua Laboratory, Foshan 528200, China.
Polymers (Basel). 2022 Mar 19;14(6):1242. doi: 10.3390/polym14061242.
Over the past few decades, polyetheretherketone (PEEK) artificial bone joint materials faced problems of poor wear resistance and easy infection, which are not suitable for the growing demand of bone joints. The tribological behavior and wear mechanism of polyetheretherketone (PEEK)/polytetrafluoroethylene (PTFE) with black phosphorus (BP) nanosheets have been investigated under dry sliding friction. Compared with pure PEEK, the COF of PEEK/10 wt% PTFE/0.5 wt% BP was reduced by about 73% (from 0.369 to 0.097) and the wear rate decreased by approximately 95% (from 1.0 × 10 mm/(N m) to 5.1 × 10 mm/(N m)) owing to the lubrication of the BP transfer film. Moreover, BP can endow the PEEK composites with excellent biological wettability and antibacterial properties. The antibacterial rate of PEEK/PTFE/BP was assessed to be over 99.9%, which might help to solve the problem of PEEK implant inflammation. After comprehensive evaluation in this research, 0.5 wt% BP nanosheet-filled PEEK/PTFE material displayed the optimum lubrication and antibacterial properties, and thus could be considered as a potential candidate for its application in biomedical materials.
在过去几十年中，聚醚醚酮（PEEK）人工骨关节材料面临耐磨性差和易感染的问题，这无法满足骨关节不断增长的需求。研究了含黑磷（BP）纳米片的聚醚醚酮（PEEK）/聚四氟乙烯（PTFE）在干滑动摩擦下的摩擦学行为和磨损机制。与纯PEEK相比，由于BP转移膜的润滑作用，PEEK/10 wt% PTFE/0.5 wt% BP的摩擦系数降低了约73%（从0.369降至0.097），磨损率降低了约95%（从1.0×10⁻⁵mm³/(N·m)降至5.1×10⁻⁶mm³/(N·m)）。此外，BP可赋予PEEK复合材料优异的生物润湿性和抗菌性能。PEEK/PTFE/BP的抗菌率评估超过99.9%，这可能有助于解决PEEK植入物炎症问题。经过本研究的综合评估，0.5 wt% BP纳米片填充的PEEK/PTFE材料表现出最佳的润滑和抗菌性能，因此可被视为生物医学材料应用的潜在候选材料。
