利用低温水溶液均相沉积法制备了磷酸钙盐微纤维;应用原位沉析法制备了壳聚糖(CS)三维棒材及羟基磷灰石(HA*)/CS复合棒材.XRD证实应用原位沉析法制备HA*/CS复合棒材过程中,磷酸钙盐转化为羟基磷灰石结构,尺寸为10～60 μm,并用SEM对晶体形貌进行了表征,分析了转化机制.HA*/CS复合材料的微观形貌表明,HA晶体在CS凝胶棒原位沉析的过程中析出而与CS基体形成镶嵌、相互咬合结构,且在基体中分散均匀,有效地提高了HA与CS基体的界面连接作用,使力学性能显著提高.所制备的HA*/CS棒材随HA*含量的增大(在其饱和溶解度3.3 wt%范围内),复合材料的弯曲性能逐渐提高,当羟基磷灰石质量分数为3.3%时,复合材料的弯曲强度达到159.6 MPa,弯曲模量达到5.1 GPa,比CS基体分别提高85.6%和54.5 0A.HA*/CS复合棒材的弯曲强度和弯曲模量远高于松质骨,弯曲强度也比密质骨高.
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