| 反相微乳液法制备壳聚糖季铵盐/四氧化三铁复合磁性纳米粒子 |
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| 引用本文： | 初立秋,陈煜,苏温娟,谭惠民,赵信岐.反相微乳液法制备壳聚糖季铵盐/四氧化三铁复合磁性纳米粒子[J].高分子材料科学与工程,2011(1):39-42. |
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| 作者姓名： | 初立秋 陈煜 苏温娟 谭惠民 赵信岐 |
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| 作者单位： | 北京理工大学材料科学与工程学院; |
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| 摘 要： | 以环氧丙基三甲基氯化铵(ETA)为季铵化试剂,制备了壳聚糖季铵盐(QC)———N-2-羟丙基三甲基氯化铵壳聚糖,采用AgNO3电位滴定法测定了季铵化度。以柠檬酸钠为改性剂,一步法制备了水基Fe3O4磁性纳米粒子。基于静电自组装作用,采用反相微乳液法制备了QC/Fe3O4复合磁性纳米粒子。通过多种手段对所制备的复合磁性纳米粒子的结构进行了表征、对其性能进行了研究。红外光谱(FT-IR)、热重分析(TG)及X射线光电子能谱(XPS)的结果表明,QC主要包覆于Fe3O4的表面。透射电镜(TEM)、X射线衍射(XRD)结果表明,复合磁性纳米粒子磁核为Fe3O4晶体结构,平均粒径大约为50 nm~60 nm。VSM结果表明,所制备的复合磁性纳米粒子仍具有超顺磁性,比饱和磁化强度为19.4emu/g。
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| 关 键 词： | 壳聚糖季铵盐 四氧化三铁 反相微乳液法 静电自组装 复合磁性纳米粒子 |
Preparation of Quarternary Chitosan/Fe_3O_4 Composite Magnetic Nanoparticles by Reversed Microemulsion Method |
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| Liqiu Chu,Yu Chen,Wenjuan Su,Huimin Tan,Xinqi Zhao.Preparation of Quarternary Chitosan/Fe_3O_4 Composite Magnetic Nanoparticles by Reversed Microemulsion Method[J].Polymer Materials Science & Engineering,2011(1):39-42. |
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| Authors: | Liqiu Chu Yu Chen Wenjuan Su Huimin Tan Xinqi Zhao |
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| Affiliation: | Liqiu Chu,Yu Chen,Wenjuan Su,Huimin Tan,Xinqi Zhao(School of Material Science and Engineering,Beijing Institute of Technology,Beijing 100081,China) |
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| Abstract: | Quarternary chitosan,N-2-hydroxylpropyl trimethyl ammonium chloride chitosan was synthesized using 2,3-epoxypropyl trimethyl ammonium chloride as reagent for quaterization.The degree of quaterization was measured by silver nitrate potential titration method.Water-based Fe3O4 magnetic nanoparticles were prepared using sodium citrate as modifier by one-step method.QC/Fe3O4 composite magnetic nanoparticles were prepared through reversed microemulsion and static self-assembly method.The structure and performanc... |
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| Keywords: | quarternary chitosan Fe3O4 reversed microemulsion static self-assembly composite magnetic nanoparticles |
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