纤维素/羟基磷灰石纳米复合材料：在LiCl/DMAc体系中微波合成及其表征
ellulose/hydroxyapatite nanocomposites: microwave-assisted synthesis and characterization in LiCl/N,N-dimethylacetamide solvent
总是周知，LiCl/DMAc是一种溶解纤维素的优良溶剂；羟基磷灰石是一种重要的生物医用材料，在组织工程和骨替代材料方面具有潜在的利用前景。本文以纤维素为基体，以氯化钙和磷酸二氢钠为原料，在N，N-二甲基乙酰胺溶剂中，利用微波辅助加热的方法制备了纤维素/羟基磷灰石纳米复合材料。纤维素预先溶解在LiCl/DMAc溶液中，以利于纤维素的分散和复合。研究了微波加热时间、加热温度以及原料浓度对纤维素/羟基磷灰石纳米复合材料物相、微结构和形态的影响。利用X-射线粉末衍射、红外光谱以及扫描电镜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和镶嵌在纤维素中，羟基磷灰石晶化度低。微波辅助加热法具有反应条件温和，后处理简单，快速，绿色环保等特点；但是由于反应时间短以及反应体系本身的特点，所得产物晶化度不高。
It is well-known that LiCl/N,N-dimethylacetamide solvent is a good medium for dissolution of cellulose. In this article, cellulose/hydroxyapatite (HA) nanocomposites were carried out using microcrystalline cellulose, CaCl2, and NaH2PO4 via microwave-assisted method. The cellulose solution was previously prepared by the dissolution of microcrystalline cellulose in LiCl/N,N-dimethylacetamide solvent. The cellulose/HA nanocomposites were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrometry (FTIR), and scanning electron microscopy (SEM). We also investigated the effects of heating times, heating temperatures, and the reactant concentrations on the phases, microstructures, and morphologies of the cellulose/HA nanocomposites. This microwave-assisted method has advantages of being simple, rapid, low-cost, and environmentally friendly. The cellulose/HA nanocomposites could be a candidate for the biomedical applications.
马明国
生物科学研究方法、生物科学研究技术生物工程学化学纤维工业
纳米复合材料羟基磷灰石纤维素微波LiCl/DMAc
NanocompositesHydroxyapatiteCelluloseMicrowaveLiCl/NN-dimethylacetamide
马明国.纤维素/羟基磷灰石纳米复合材料：在LiCl/DMAc体系中微波合成及其表征[EB/OL].(2013-02-04)[2025-07-17].http://www.paper.edu.cn/releasepaper/content/201302-42.点此复制
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