POS8-0849
Photocurable MAPPSU‑based di(meth)acrylate resins with enhanced mechanical properties for dental restorative 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
Aromatic polysulfones are recognized as high‑performance engineering plastics and are highly suitable for biomedical, aerospace, and other high‑temperature applications due to their outstanding thermal stability, superior mechanical strength, and excellent chemical resistance, which arise from their rigid aromatic backbone and electron‑withdrawing sulfone groups. In this work, a methacrylate‑functionalized poly(phenyl sulfone) (MAPPSU) oligomer was synthesized from hydroxy‑terminated PPSU and characterized by FT‑IR, ¹H‑NMR, GPC, TGA, and DSC. 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 prepared from various di(meth)acrylate mixtures containing MAPPSU and MPS‑silica at different ratios, and both bulk‑cured and DLP 3D‑printed specimens were fabricated. The compressive strength, flexural strength, hardness, and dynamic mechanical properties (DMA) were evaluated, and fracture surfaces and surface wettability were analyzed by SEM and contact angle measurements to elucidate the failure behavior and surface characteristics.
