Preparation and properties of modif ied hydroxyapatites/ highdensity polyethylene artificial bone composites
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摘要: 采用磷酸单酯偶联剂对羟基磷灰石( HA) 进行表面改性处理, 通过熔融共混复合等工艺制备了改性HA/ 高密度聚乙烯( HDPE) 复合人工骨材料。用IR、TGA 和燃烧实验对复合材料的结构和组成进行了表征, 并对复合材料的流变性能、热稳定性、力学性能进行了初步研究。结果表明,所制备的改性HA/ HDPE 复合材料比未改性HA/ HDPE 具有更好的流变性能和机械力学性能, 组成均一, 具有良好的热稳定性, 通过控制复合材料中改性HA 及HDPE 配比, 可制备出机械力学性能优良的复合人工骨材料, 在生物医学材料研究中具有重要意义。Abstract: The surface of Hydroxyapatite ( HA) particles was modified by monophosphatase coupling agent . Themodified HA/ high density polyethylene ( HDPE) artificial bone composites were prepared with the fusing and mixingmethod. The composites were investigated by IR , TGA and burning test ; the rheological properties , thermal andmechanical properties were studied in detail. The result s show that the modified composites possess better rheologi2cal and mechanical properties than those of unmodified ones , good thermal properties and homogeneity. The artifi2cial bone biomaterials with good mechanical properties can be prepared through cont rolling the content of modifiedHA or HDPE in the composites.
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Key words:
- monophosphatase coupling agent /
- surface modification /
- composite
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