摘要The poor wear resistance and bio-inertness surface of polyetheretherketone(PEEK)limits the implant applications of PEEK and its composites.Carbon fiber(CFR)was used to boost the wear resistance of PEEK;however,the bioactivity of carbon fiber-reinforced polyetheretherketone(CFR-PEEK)composites is even worse.The bioactivity of CFR-PEEK can be enhanced by constructing 3D porous structure.Nevertheless,large number of sulfur component introduced by sulfona-tion shows cytotoxicity and can cause damage to human cells.Besides,the sulfur component affects the cytotoxicity and bioactivity of sulfonated CFR-PEEK(SCFR-PEEK).Hydrothermal treatment can sweep away the sulfur component in the 3D porous structure of SCFR-PEEK.Meanwhile,the changes in crystallinity and hardness after hydrothermal treatment may also affect the wear resistance.Therefore,the effect of hydrothermal temperature on wear resistance,cytotoxicity and bioactivity of SCFR-PEEK were studied.In this work,the samples with hydrothermal temperature 90-120℃exhibited high wear resistance.The 3D pore structure of SCFR-PEEK unchanged after hydrothermal treatment,and the sulfur component in the 3D pore structure gradually decreased with increasing hydrothermal temperature by SEM images and EDS analysis.In addition,SCFR-PEEK treated in 90-120℃.Exhibited low cytotoxicity and high bioactivity,which is beneficial for the implant materials.