Development of FRP composed by bioactive glass fiber and polymer for bone reconstruction

点击翻译按钮获取中文摘要

The purpose of this research was to develop a new FRP material composed by bioactive glass fiber and biodegradable polymer for bone reconstruction. The tensile strength and solubility of Na_2O-CaO-TiO_2-SiO_2 (NCTS) have been studied. The tensile strength of NCTS glass fiber at 24 hours of the immersion of purity water was about 49.2 % of that before the immersion. The exposure to purely water rapidly decreased the tensile strength of the NCTS glass fiber. A purely water immersed specimens exhibit alkaline properties at 30 minutes. The pH of the solution was about 10. Its pH did not change with time. The contents of NCTS glass fiber dissolved in the immersed water, and these amounts increased with time. At 30 days after immersion, the amount of Na_2O, CaO, TiO_2, SiO_2 in water was 9.0, 0, 0, 6.5 mass%, respectively.In immersion of simulated body fluid, the tensile strength of NCTS glass fiber increased. NCTS glass fiber at 10 days after immersion of simulated body fluid showed the 110% tensile strength of NCTS glass fiber before immersion.The surface morphology of NCTS glass fiber after immersion of purely water was heterogeneous, showing irregular shape. On the other hand, SEM image of the NCTS glass fiber after immersion of the simulated body fluid show the crystalline apatites on the NCTS glass fiber.