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聚DL-丙交酯/羟基磷灰石(PDLLA/HA)复合材料——Ⅱ:硅烷偶联剂处理羟基磷灰石表面的作用研究

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Keywords: 聚DL,-丙交酯,羟基磷灰石,硅烷偶联剂,复合材料

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Abstract:

采用硅烷偶联剂(A-174)对羟基磷灰石(HA)表面进行处理,XPS分析表明,偶联剂在羟基磷灰石表面形成多层结构,并生成稳定的化学键O-P-Si。将经偶联剂处理的HA微粉与聚DL-丙交酯(PDLLA)复合,所制备的复合材料力学强度与处理前相比得到明显提高。SEM显示,经处理后的HA微粒在PDLLA基质中分散均匀,两者结合紧密。本文作者认为,加强复合材料的界面相互作用和提高填充质在基质中的分散度是提高复合材料力学强度的有效途径。

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