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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Characterization of bioactive glass-reinforced HAP-polymer composites
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Characterization of bioactive glass-reinforced HAP-polymer composites

机译：生物活性玻璃增强的HAP-聚合物复合材料的表征

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摘要

The effect of bioactive glass on the mechanical properties of hydroxyapatite-Ca polyacrylate composites was studied. Powder mixtures of tetracalcium phosphate (TretCP), poly(acrylic-co-itaconic) and bioactive glass (up to 50 percent by weight) were hot pressed for 30 mm at 300 deg C and 40 kpsi. Tensile strengths, elastic moduli, and microstructures of the composites produced were investigated. Results showed the mechanical properties of these composites were enhanced by the addition of bioactive glass. The highest values of tensile strength and elastic modulus were achieved with the addition of 10 percent bioactive glass. Composites were immersed in SBF for up to 10 days, then in 1.5 simulated body fluid (SBF) for a week The changes in the concentrations of Ca, P, and Si ions of these solutions were measured. The microstructures of these composites after SBF immersion were also evaluated. Concentrations of Ca, P, and Si increased with the time of immersion in SBF owing to the formation of an apatite layer on their surfaces as found by SFM with energy-dispersive spectroscopy attachment.
机译：研究了生物活性玻璃对羟基磷灰石-钙聚丙烯酸酯复合材料力学性能的影响。将磷酸四钙（TretCP），聚丙烯酸-衣康体和生物活性玻璃（重量百分比最高为50％）的粉末混合物在300摄氏度和40 kpsi下热压30毫米。研究了所生产复合材料的拉伸强度，弹性模量和微观结构。结果表明，通过添加生物活性玻璃可以增强这些复合材料的机械性能。加入10％的生物活性玻璃可获得最高的拉伸强度和弹性模量。将复合材料浸入SBF中最多10天，然后浸入1.5模拟体液（SBF）中一周。测量这些溶液中Ca，P和Si离子浓度的变化。还评估了SBF浸泡后这些复合材料的微观结构。 Ca，P和Si的浓度会随着在SBF中的浸入时间而增加，这是由于SFM结合能量色散光谱法发现，在其表面形成了磷灰石层。

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