Karadag Mecit, Dolekcekic Emrah, Erdem Murat, Özcan Mutlu
Department of Materials Science and Engineering, Institution of Graduate Schools, Eskisehir Technical University, 26555 Eskisehir, Turkey.
Department of Metallurgy, Vocational High School, Bilecik Seyh Edebali University, 11230 Bilecik, Turkey.
Materials (Basel). 2024 Aug 21;17(16):4136. doi: 10.3390/ma17164136.
This study evaluated the effect of stearyl methacrylate addition on the physical and mechanical properties of bisphenol A glycidyl methacrylate- and triethylene glycol dimethacrylate-based polymers, which are traditionally used in dental applications. Methacrylate-based monomer compositions are polymerized under the visible blue light spectrum. An analysis of double bond conversion, surface microhardness test, three-point bending test and water sorption and water solubility were tested to determine the physical and mechanical properties of the dental polymers. The results indicated that stearyl methacrylate addition up to 25 wt% reduced the water sorption of the polymers. At amounts of stearyl methacrylate higher than 25 wt%, the solubility of the polymer in water increases due to the monofunctional structure. Mechanical properties are negatively affected by the increasing stearyl methacrylate ratio. Further, the addition of stearyl methacrylate slightly increased thermal stability. As such, the amount of stearyl methacrylate in a polymer composition is critical for the optimization of its mechanical and physical properties. According to the results, the amount of stearyl methacrylate has to be between 12.5-25 wt%.
本研究评估了添加甲基丙烯酸硬脂酯对双酚A甲基丙烯酸缩水甘油酯和三乙二醇二甲基丙烯酸酯基聚合物物理和机械性能的影响，这些聚合物传统上用于牙科应用。甲基丙烯酸酯基单体组合物在可见蓝光光谱下聚合。通过测试双键转化率、表面显微硬度测试、三点弯曲测试以及吸水性和水溶性来确定牙科聚合物的物理和机械性能。结果表明，添加高达25 wt%的甲基丙烯酸硬脂酯可降低聚合物的吸水性。当甲基丙烯酸硬脂酯的含量高于25 wt%时，由于其单官能结构，聚合物在水中的溶解度增加。机械性能受到甲基丙烯酸硬脂酯比例增加的负面影响。此外，添加甲基丙烯酸硬脂酯会略微提高热稳定性。因此，聚合物组合物中甲基丙烯酸硬脂酯的含量对于优化其机械和物理性能至关重要。根据结果，甲基丙烯酸硬脂酯的含量必须在12.5 - 25 wt%之间。
