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As with any material, some characteristics may be altered by the processing techniques (molding, extrusion, machining, assembly, sterilization, and so forth) required for the production of a specific part or device. Its polymeric structure is defined by the repeating unit EEK. The PEEK polymer in the scope of this specification is a pure semicrystalline homopolymer consisting of phenylene rings connected by ether (E) and carbonyl (or ketone, K) groups along the polymer chain. It provides requirements and associated test methods for these thermoplastics when they are to be used in the manufacture of intracorporeal devices such as surgical implants or components of surgical or dental devices. This specification covers polyetheretherketone (PEEK) polymer in virgin forms as pellets, powder, and so forth.
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