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Microspheres based on hydroxyapatite nanoparticles aggregates for bone regeneration

机译：基于羟基磷灰石纳米颗粒的微球聚集体用于骨再生

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This study concerns the preparation and characterisation of microspheres associating alginate and two different types of hydroxyapatite (HA), which are intended to be used as drug delivery systems and bone regeneration matrices. Hydroxyapatite nanoparticles (HA-1 and HA-2) were prepared using a chemical precipitation synthesis based on H3PO4, Ca(OH)2 and a surfactant, SDS (sodium dodecylsulphate), as starting reagents. These two powders of nanoHA and alginate were used to prepare two different types of microspheres. Both powders and microspheres were characterised using FTIR, TEM, SEM, mercury porosimetry analysis and X-ray diffraction Results show that pure hydroxyapatite (HA) and mixtures of HA/β-TCP in the nanometre range were obtained from both HA syntheses. Microspheres with different characteristics were obtained from these two types of hydroxyapatite.
机译：这项研究涉及将藻酸盐和两种不同类型的羟基磷灰石（HA）结合的微球的制备和表征，这些微球旨在用作药物递送系统和骨再生基质。使用基于H3PO4，Ca（OH）2和表面活性剂SDS（十二烷基硫酸钠）的化学沉淀合成方法制备羟基磷灰石纳米颗粒（HA-1和HA-2）。这两种纳米HA和藻酸盐粉末用于制备两种不同类型的微球。使用FTIR，TEM，SEM，汞孔隙率分析和X射线衍射对粉末和微球进行了表征。结果表明，两种HA合成均获得了纳米范围内的纯羟基磷灰石（HA）和HA /β-TCP混合物。从这两种羟基磷灰石中获得了具有不同特性的微球。

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