Szterner Piotr, Biernat Monika
ŁUKASIEWICZ Research Network, Institute of Ceramics and Building Materials, Ceramic and Concrete Division in Warsaw, Biomaterials Research Group, Postępu 9, Warsaw 02-676, Poland.
Bioinorg Chem Appl. 2022 Mar 25;2022:3481677. doi: 10.1155/2022/3481677. eCollection 2022.
Hydroxyapatite and other calcium phosphates in the form of whiskers are lately widely considered as fillers for biocomposites due to their special biological and reinforcing properties. Depending on the method of synthesis, apatite whiskers of various sizes and phase composition can be obtained. In our work, hydroxyapatite (HAp) whiskers were successfully prepared in reaction between calcium lactate pentahydrate and orthophosphoric acid. The advantage of the proposed technique is the simple but precise control of the HAp crystal morphology and high product purity which is necessary for biomedical applications. The effect of reagent concentrations, pH, reaction temperature, and pressure on HAp whiskers' morphology and composition was investigated. In the result, we obtained hydroxyapatite of different morphology such as whiskers, hexagonal rods, and nanorods. The products were characterized by SEM, XRD, and FTIR. In this work, the synthesis of HAp whiskers by direct decomposition of calcium lactate pentahydrate chelates under hydrothermal conditions was showed for the first time.
羟基磷灰石和其他晶须形式的磷酸钙由于其特殊的生物学和增强性能，近来被广泛认为是生物复合材料的填料。根据合成方法，可以获得各种尺寸和相组成的磷灰石晶须。在我们的工作中，通过五水合乳酸钙与正磷酸的反应成功制备了羟基磷灰石（HAp）晶须。所提出技术的优点是对HAp晶体形态的简单而精确的控制以及生物医学应用所需的高产品纯度。研究了试剂浓度、pH值、反应温度和压力对HAp晶须形态和组成的影响。结果，我们获得了不同形态的羟基磷灰石，如晶须、六方棒和纳米棒。通过扫描电子显微镜（SEM）、X射线衍射（XRD）和傅里叶变换红外光谱（FTIR）对产物进行了表征。在这项工作中，首次展示了在水热条件下通过直接分解五水合乳酸钙螯合物合成HAp晶须的方法。
