Atsuta M, Abell A K, Turner D T, Nakabayashi N, Takeyama M
J Biomed Mater Res. 1982 Sep;16(5):619-28. doi: 10.1002/jbm.820160509.
Composite materials were made by sedimention of ceramic powders in methyl methacrylate which was then polymerized by gamma-irradiation. Inclusion of 4-methacryloxyethyl trimellitic anhydride (4-META) generally was found to result in an increase in Knoop hardness number, Young's modulus, and transverse strength. Most emphasis was placed on transverse strength which was found to be increased by ca. 30% by inclusion of 4-META (5 wt %) in composites made with silanated LiAlSiO4. However an abrupt decrease in strength was found for composites with greater than ca. 83 wt % silanated LiAlSiO4. This was shown by fractography to be due to increased porosity and dewetting at the higher filler contents. Fractography also indicated that inclusion of 4-META results in a more coherent polymeric matrix. Further evidence for greater coherence was obtained by showing that 4-META confers resistance to disintegration by chloroform.
通过将陶瓷粉末沉淀在甲基丙烯酸甲酯中制备复合材料，然后通过γ射线辐照使其聚合。通常发现，加入4-甲基丙烯酰氧基乙基偏苯三酸酐（4-META）会导致努氏硬度值、杨氏模量和横向强度增加。研究重点主要放在横向强度上，发现在用硅烷化LiAlSiO4制成的复合材料中加入4-META（5 wt%）可使横向强度提高约30%。然而，对于硅烷化LiAlSiO4含量大于约83 wt%的复合材料，强度出现突然下降。断口分析表明，这是由于较高填料含量下孔隙率增加和去湿所致。断口分析还表明，加入4-META会使聚合物基体更连贯。通过表明4-META赋予抗氯仿分解能力，获得了更强连贯性的进一步证据。
