聚乙烯醇改性羟基磷灰石超细粉的制备及表征  

Preparation and characterization of hydroxyapatite extra-fine powder by using polyvinyl alcohol as organic modifier

作　　者：牛丽婷[1] 刘敬肖[1] 周靖[1] 王继红[1] 

机构地区：[1]大连轻工业学院化工与材料学院,辽宁大连116034

出　　处：《大连轻工业学院学报》2004年第4期239-241,共3页Journal of Dalian Institute of Light Industry

基　　金：辽宁省教育厅A类攻关项目(202073425);辽宁省博士启动基金项目(20021054).

摘　　要：以四水硝酸钙和磷酸为原料,通过湿化学法合成了羟基磷灰石(HAP)超细粉,并引入聚乙烯醇(PVA)做HAP的有机改性剂,制备了有机改性的羟基磷灰石超细粉。用X射线衍射(XRD)、傅立叶红外光谱(FT IR)和粒度分析仪对HAP的形成过程和性质进行了分析表征。结果表明,引入聚乙烯醇做有机添加剂后,XRD图中的杂质峰明显减少,粒度分布集中在0～0.28μm,说明提高了羟基磷灰石超细粉的纯度,改善了粒度分布,并且聚乙烯醇的引入使HAP的晶化温度降低至500℃。This paper reports the preparation and characterization of the hydroxyapatite extra-fine powder, by using wet-chemical method and Ca(NO_3)_2·4H_2O and H_3PO_4 as raw material. The polyvinyl alcohol is incorporated in process of HAP as organic modifier. The HAP crystalline and the preparation process are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and powders analyzer. It reveals that the impurity peaks of the XRD pattern are evidently decreased, by using PVA as organic modifier. Distribution of the particle sizes is improved, mostly within the range of (0-0.28μm.) The crystallization temperature is lowered to 500?℃ by incorporating with PVA.

关 键 词：聚乙烯醇 超细粉 HAP 有机改性剂 制备 表征 羟基磷灰石 傅立叶红外光谱 降低 改善 

分 类 号：TS103.846[轻工技术与工程—纺织工程] TQ174[轻工技术与工程—纺织科学与工程]