| 羧甲基葡聚糖磁性纳米微球的制备及表征 |
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| 引用本文： | 周瑜,王芳斌,刘又年,黄可龙.羧甲基葡聚糖磁性纳米微球的制备及表征[J].化学研究,2009,20(2):5-8. |
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| 作者姓名： | 周瑜 王芳斌 刘又年 黄可龙 |
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| 作者单位： | 中南大学,化学化工学院,湖南,长沙,410083 |
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| 基金项目： | 国家自然科学基金，长沙市科技计划 |
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| 摘 要： | 采用超声预处理技术，在羧甲基葡聚糖-水分散体系中，通过化学共沉淀法制备羧甲基葡聚糖磁性复合微球．采用IR，TEM，AFM，XRD和振动样品磁强计方法对产物进行了表征．实验结果表明：超声预处理方法能明显提高复合微球的分散性．制得的复合微球呈球形，分散均匀，平均粒径为100nm．它们具有超顺磁性，室温下磁性饱和磁化强度为35emu·g^-1．
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| 关 键 词： | 羧甲基葡聚糖 磁性材料 纳米微球 超顺磁性 超声 分散性 Fe3O4 |
Preparation and Characterization of Carboxymethyldextran-modified Magnetic Nanoparticles |
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| ZHOU Yu,WANG Fang-bin,LIU You-nian,HUANG Ke-long.Preparation and Characterization of Carboxymethyldextran-modified Magnetic Nanoparticles[J].Chemical Research,2009,20(2):5-8. |
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| Authors: | ZHOU Yu WANG Fang-bin LIU You-nian HUANG Ke-long |
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| Institution: | (College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China) |
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| Abstract: | By means of chemical co-deposition method,Fe3O4 magnetic microspheres were prepared in carboxymethyldextran-H2O dispersed phase by ultrasonic pretreatment.The product was characterized by IR,TEM,AFM,XRD and vibrating sample magnetometer(VSM) methods.Results show that disperse of nanoparticles is improved by ultrasonic pretreatment method.The magnetic microspheres are roundness with an average size of 100 nm.These nanoparticles show supermagnetism with a magnetization of 35 emu·g-1. |
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| Keywords: | Fe3O4 |
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