[2PS-083]
Synthesis and characterization of 3D printable PEKK-based resins with multifunctional groups for high-performance dental applications
발표자이정민 (부산대학교)
연구책임자정일두 (부산대학교)
Abstract
Poly(ether ketone ketone) (PEKK) is notable for its excellent thermal stability, mechanical strength, and versatile chemistry due to two ketone groups. In this study, a GDMA end-capped PEKK oligomer (CAEKK-GDMA) was synthesized by reacting carboxylic acid-terminated PEKK oligomer (CAEKK) with glycerol dimethacrylate (GDMA). The tetra-functionality of GDMA increases enhancing the mechanical properties cross-linking density, of the resulting polymer network. The structure of CAEKK-GDMA was confirmed by FT-IR, 1H-NMR, and GPC analyses. Various blends of CAEKK-GDMA and Bisphenol A ethoxylate dimethacrylate (EBPDMA) were photopolymerized using a DLP 3D printer. Mechanical testing demonstrated improved compressive and flexural strengths compared to neat resins. These results suggest that incorporating GDMA’s four functional groups facilitates a tightly cross-linked network, significantly improving the mechanical performance of 3D-printed dental resins.