POS8-0870
3D‑printable PEKK‑based dimethacrylate resins with multifunctional groups for high‑performance dental applications
Topic
S8. Frontiers of Functional Polymers in Biology and Medicine
When and Where
Oct 1, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Jinkee HONG
Ki Su KIM
Presenter(s)
Soojung Lee (Pusan National University)
Co-Author(s)
Abstract
Poly(aryl ether ketones) (PAEKs) have recently emerged as leading biomedical polymer materials owing to their excellent biocompatibility, high thermal stability, and outstanding mechanical properties. Among PAEKs, poly(ether ketone ketone) (PEKK) offers higher thermal stability, superior mechanical properties, and versatile chemistry arising from two ketone groups in the backbone compared to other PAEKs. In this work, we focused on a PEKK‑based oligomer to reinforce photocurable dental resins. A dimethacrylate‑terminated PEKK (DMAEKK) oligomer was synthesized from carboxylic acid‑terminated PEKK (CAEKK) and glycerol dimethacrylate (GDMA), and characterized by FT‑IR, ¹H‑NMR, and GPC. Colloidal silica nanoparticles modified with 3‑(trimethoxysilyl)propyl methacrylate (MPS‑silica) were also prepared and characterized by FT‑IR, DLS, and SEM. Photocurable resin formulations were obtained by mixing DMAEKK, MPS‑silica, and ethoxylated bis‑GMA dimethacrylate (EBPDMA) at various ratios, and specimens were fabricated by digital light processing (DLP) 3D printing. Their compressive strength, flexural strength, hardness, and polymerization shrinkage were evaluated to investigate the effect of DMAEKK and MPS‑silica on the mechanical performance of the dental resins.
