Abstract
Hydroxyapatite (HA) particles reinforced polyetheretherketone biocomposites were prepared by in situ method and incorporation with hot pressing technology. The various influences such as HA content, annealing treatment and preparation methods on the mechanical properties of HA/polyetheretherketone biocomposites have been extensively investigated. The fracture morphologies of the biocomposites were observed by SEM. Results of the tensile and compressive tests indicated that both tensile and compressive strength of the biocomposites decreased with the increasing HA content. Based on the fracture morphology observation and incorporation with stress–strain behaviour, it can be revealed that the fracture mechanism of the biocomposites gradually changed from ductile to brittle fracture with the increasing HA content. The results of annealing treatment indicated that the tensile strength of the biocomposites was significantly improved after annealing treatment. The study on the preparation methods verified that the compressive strengths of the biocomposites prepared by in situ method were obviously larger than that by mechanical blending method.
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