A rapid microwave-assisted preparation of hydroxyapatite crystals on the microcrystalline cellulose matrix in N,N-dimethylformamide solvent
首发时间:2012-08-21
Abstract:The purpose of this article is to introduce a rapid route for the preparation of biomaterials on the biomass-based polymer matrix. Herein, hydroxyapatite (HA) crystals dispersed in the microcrystalline cellulose matrix have been fabricated by using microcrystalline cellulose, CaCl2, and NaH2PO4 in N,N-dimethylformamide (DMF) solvent by a simple and rapid microwave-assisted method. The influences of the microwave heating times and the heating temperatures on the phases, microstructures, and morphologies of products were explored. The samples were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TG), and differential scanning calorimetric analysis (DSC). The thermal stability of the products was also researched. This route reported here has advantages of being simple, rapid, low-cost, and environmentally friendly.
keywords: Hydroxyapatite Microcrystalline cellulose Microwave N,N-dimethylformamide
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在N,N-二甲基甲酰胺中利用微波法制备羟基磷灰石及其表征
摘要:羟基磷灰石是一种重要的生物医用材料,在组织工程、药物装载与释放以及骨替代材料方面具有潜在的利用前景。本文以微晶纤维素为基体,以氯化钙和磷酸二氢钠为原料,在N,N-二甲基甲酰胺溶剂中,利用微波辅助加热的方法制备了羟基磷灰石纳米晶。研究了微波加热时间以及加热温度对产物物相、微结构和形态的影响。利用X-射线粉末衍射、红外光谱、扫描电镜、差热热重等测试技术对产物进行了表征。研究表明,羟基磷灰石分散在微晶纤维素表面,羟基磷灰石晶化度高,加热温度对热稳定性有一定的影响。微波辅助加热法反应条件温和,后处理简单,快速,绿色环保,是一种绿色的材料制备方法。
关键词: 羟基磷灰石 微晶纤维素 微波 N,N-二甲基甲酰胺
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在N,N-二甲基甲酰胺中利用微波法制备羟基磷灰石及其表征
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