| 초록 |
Poly(ether ketone ketone) (PEKK), a type of poly aryl ether ketones (PAEKs) with two ketone bonds along the polymer backbone has now gradually become the leading polymer in biomedical fields, such as orthopedic and implants, due to its good biocompatibility and high thermal, mechanical properties. In this study, photopolymerizable and 3D printable engineering plastic based on PEKK was synthesized to improve the mechanical properties of dental resin and used to fabricate the temporary crown by using 3D printer through digital light processing (DLP) technique. Hydroxyethyl methacrylate (HEMA)–terminated PEKK oligomer was first synthesized from pre-synthesized acid-chloride terminated PEKK oligomer (PEKK-Cl) and HEMA and characterized by FT-IR, 1H-NMR spectroscopies, and MALDI-TOF. The mixtures of PEKK-HEMA and ethoxylated bis-GMA (EBPDMA) with various ratios were photopolymerized by DLP 3D printer and their mechanical properties such as compressive and flexural strengths were measured. |
