基于生物矿化原理,以Ca(NO3)2·4H2O和(NH4)3PO4·3H2O为原料,以聚二甲基二烯丙基氯化铵(PDAC)为模板成功制备出球状纳米羟基磷灰石(HA)晶体.采用X射线衍射仪(XRD)、傅立叶变换红外光谱(FT-IR)、透射电镜(TEM)和热重分析(TG)对纳米HA的结构、组成、形貌和热性能进行表征.结果表明,PDAC浓度对HA晶体形貌有很大影响.随着PADC浓度增大,所得HA晶粒形貌转变为球状,当PDAC的浓度达到2.0 wt%时,得到粒径大小在40 nm左右的球状HA颗粒.同时,对HA晶体形貌形成的可能机理进行了讨论.
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