Mechanical properties of polyetheretherketone composites with modified hydroxyapatite nanofibers and carbon fibers
발표자
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초록
내용
Carbon fiber (CF)-reinforced polyetheretherketone (PEEK) has gained attention as an alternative to metallic orthopedic implant materials by virtue of its good biocompatibility and favorable mechanical properties. However, its applications are limited due to its bioinertness and hydrophobicity. Hydroxyapatite (HA) incorporated to address the issue has appeared to severely lower the mechanical strength due to its aggregation in the composites. Thus, HA was synthesized in the form of nanofibers to improve the mechanical properties of the composite by taking advantage of the high aspect ratio and bridging effect of the fibers. In addition, the HA nanofibers (HANF) and CF were modified with a silane coupling agent to enhance their interfacial adhesion with the PEEK matrix. The effect of modified fillers on composite strength was measured.