Synergistic Lubrication and Antioxidation Efficacies of Graphene Oxide and Fullerenol as Biological Lubricant Additives for Artificial Joints

The service life of artificial joints has gradually failed to meet the needs patients. Herein, synergistic lubrication and antioxidant efficacies graphene oxide (GO) fullerenol (Fol) as biological lubricant additives for were investigated. mechanisms containing GO Fol at friction interface then revealed. Tribological tests showed that average coefficients Al2O3–Ti6Al4V pairs Ti6Al4V–UHMWPE could be reduced by 30% 22%, respectively, when used simultaneously. mechanism some incommensurate sliding contact surfaces formed between nanosheets spherical interface, which interaction forces pairs. maximum scavenging rates •OH DPPH free radicals 35% 45%, showing a good efficacy lubricant. This can attributed through electron transfer hydrogen transfer. study provides theoretical basis development application carbon nanomaterials in future.