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生物医用纳米羟基磷灰石的研究进展 总被引:2,自引:0,他引:2
纳米羟基磷灰石既具有纳米材料的特性,又具有羟基磷灰石本身的特性,在生物医学领域具有非常广阔的应用前景.本文详细介绍了纳米羟基磷灰石的历史发展、制备方法、表面改性及其在生物医用材料领域的应用. 相似文献
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采用化学沉淀法制备了纳米掺锶羟基磷灰石(Sr-CaHAP),通过XRD、FT-IR、TEM等手段,对纳米掺锶羟基磷灰石进行了结构分析。以牛血清白蛋白(BSA)为吸附目标,研究了纳米掺锶羟基磷灰石的吸附性能。结果表明,实验制备的纳米掺锶羟基磷灰石分散性好,是具有一定粒径的纳米针状晶体。在吸附时间为1 h、反应温度为45 ℃、pH为7时,掺锶羟基磷灰石对牛血清白蛋白的吸附量最大;且随着牛血清白蛋白浓度的增加,对牛血清白蛋白的吸附量也随之增加。相比较,掺锶羟基磷灰石对牛血清白蛋白的吸附量较羟基磷灰石大。 相似文献
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碳羟基磷灰石纳米球的制备及其在含Cd2+废水处理中的应用 总被引:2,自引:0,他引:2
以羟丙基甲基纤维素(HPMC)为软模板,制备了碳羟基磷灰石纳米球,用能谱分析(EDS)、红外光谱(FT-IR)、透射电镜(TEM)及X射线衍射(XRD)等实验手段对产物进行了相关表征,研究了羟基磷灰石纳米球对废水溶液中镉离子的去除行为.研究表明,所制备的碳羟基磷灰石为球形晶体,平均直径为20~30nm,且分散均匀,其对含镉废水的净化能力明显高于市售粉体羟基磷灰石. 相似文献
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介绍了纳米羟基磷灰石的制备方法,纳米羟基磷灰石在牙齿再矿化、牙齿脱敏和牙齿美白方面的性能及纳米羟基磷灰石在牙膏中的应用。 相似文献
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殷宪国 《硫磷设计与粉体工程》2012,(2):36-40,52
介绍了纳米羟基磷灰石制备和掺杂技术,以及纳米羟基磷灰石复合材料,包括它们在组织工程支架材料、缓控释药物载体、靶向药物传递及环境功能材料等方面的制备技术和应用,显示纳米羟基磷灰石及其复合材料在生物医学领域将会有良好发展前景。 相似文献
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Zhang D Tian A Xue X Wang M Qiu B Wu A 《International journal of molecular sciences》2012,13(1):1109-1125
In this study, we investigated the effects of temozolomide (TMZ)/Poly (lactide-co-glycolide)(PLGA)/nano-hydroxyapatite microspheres on the behavior of U87 glioma cells. The microspheres were fabricated by the "Solid/Water/Oil" method, and they were characterized by using X-Ray diffraction, scanning electron microscopy and differential scanning calorimetry. The proliferation, apoptosis and invasion of glioma cells were evaluated by MTT, flow cytometry assay and Transwell assay. The presence of the key invasive gene, α(V)β3 integrin, was detected by the RT-PCR and Western blot method. It was found that the temozolomide/PLGA/nano-hydroxyapatite microspheres have a significantly diminished initial burst of drug release, compared to the TMZ laden PLGA microspheres. Our results suggest they can significantly inhibit the proliferation and invasion of glioma cells, and induce their apoptosis. Additionally, α(V)β3 integrin was also reduced by the microspheres. These data suggest that by inhibiting the biological behavior of glioma cells in vitro, the newly designed temozolomide/PLGA/nano-hydroxyapatite microspheres, as controlled drug release carriers, have promising potential in treating glioma. 相似文献
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《Ceramics International》2016,42(14):15559-15567
The objective of this study was to combine titanium doped nano-hydroxyapatite with chitosan and calcium sulfate to obtain cement-type materials with improved cohesion and handling properties. It was proven that the presence of nano-TiHA influenced setting, hardening, microstructure and bioactivity of the cement samples. In the developed composites chitosan played a role of the cohesion promotor and created homogenous organic layers on the materials surfaces. Application of chitosan in acetic acid solution favorably delayed setting process of calcium sulfate dihydrate. The polymer combined with nano-TiHA and calcium sulfate improved handling and workability of the cements without diminishing their mechanical properties. It was suggested that the resorption rate of materials based on calcium sulfate can be optimized by addition of both titanium doped nano-hydroxyapatite and chitosan. 相似文献
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Youssef Hanan Farouk El-Kady Abeer M. Ahmed Manar M. Abo-almaged Hanan Hassan 《Journal of Porous Materials》2021,28(6):1979-1998
Journal of Porous Materials - This work was aiming to design novel bio-composite (BC) materials based on microwave-prepared AuNPs-loaded Zeolite-A (ZA-Au) and nano-hydroxyapatite (HA).... 相似文献
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两种反相微乳液体系合成纳米羟基磷灰石的比较 总被引:2,自引:0,他引:2
制备了两种稳定的CTAB/正丁醇/正己烷/水体系和TritonX-100/正己醇/环己烷/水反相微乳液体系,研究了微乳液组份的浓度和比例对微乳液性质的影响,比较了两种反相微乳液体系的三元相图,用“微反应器”合成了纳米羟基磷灰石(HAP)粉体,比较了HAP颗粒在X-射线衍射、TEM、SEM表征中的异同。两种体系都表明反向微乳液法可以有效地控制和改变HAP的分散性和粒度大小。 相似文献