| 초록 |
Polybenzimidazole is well known for its thermal stability, chemical resistance, and excellent mechanical properties. Most resin monomers, which have been used in dental applications, need strong durability, small shrinkage, biocompatibility, easy polymerization. Therefore, based on the properties of PBI, it is expected to overcome the problems of conventional dental restorative materials such as low durability and shrinkage. In this study, poly[2,2’-(m-phenylene)-5,5’-bibenzimidazole](PBI) was synthesized through condensation polymerization from isophthalic acid(IPA) and 3,3’-diaminobenzidine(DAB), and characterized by FT-IR, 1H-NMR spectroscopies and TGA. The synthesized polymer was formulated with ethoxylated Bis-GMA(EBPDMA) in various ratios and irgacure 819 as a photoinitiator, photopolymerized, then finally used to evaluate their compressive strength by universal testing machine(UTM). |
