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材料研究学报  2011, Vol. 25 Issue (6): 561-565    
  研究论文 本期目录 | 过刊浏览 |
具有固--液转变的磁性Fe3O4纳米流体的制备、结构及性能
檀雨默, 张爱波, 郑亚萍, 兰岚, 陈伟
西北工业大学理学院应用化学系 西安 710072
Synthesis, Structure and Properties of Fe3O4 Nanofluids with Liquid–like Behavior
TAN Yumo, ZHANG Aibo, ZHENG Yaping, LAN Lan, CHEN Wei
Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xian 710072
引用本文:

檀雨默 张爱波 郑亚萍 兰岚 陈伟. 具有固--液转变的磁性Fe3O4纳米流体的制备、结构及性能[J]. 材料研究学报, 2011, 25(6): 561-565.
, , , , . Synthesis, Structure and Properties of Fe3O4 Nanofluids with Liquid–like Behavior[J]. Chin J Mater Res, 2011, 25(6): 561-565.

全文: PDF(965 KB)  
摘要: Fe3O4纳米粒子与离子型改性剂N, N-二癸基-N-甲基-N-三甲氧基硅正丙基氯化铵进行接枝反应, 再采用反离子脂肪醇聚氧乙烯醚磺酸盐的长链阴离子交换Cl-, 在Fe3O4纳米粒子表面得到具有阴、阳离子双电层结构的表面处理层, 制备出了无溶剂Fe3O4纳米流体。分析结果表明, 表面处理层已成功地接枝在Fe3O4纳米粒子表面, 改性的Fe3O4纳米粒子呈单分散, 其损耗剪切模量G''明显大于储能剪切模量G', 并具有明显的流体行为, 室温下存放一年状态稳定, 流动性良好。
关键词 无机非金属材料磁性纳米粒子表面改性无溶剂纳米流体固--液转变    
Abstract:Fe3O4 nanoparticles were modified with ionic surfactant (CH3O)3Si(CH2)3N+(CH3)(C10H20)2Cl−, and then the chloridion was replaced by the anion C9H19C6H4(OCH2CH2)20O(CH2)3SO−3 through an ion-exchange process. As a result, an electrical double–layer structure was formed on the surface of Fe3O4 nanoparticles. The results showed that the surface layer has been successfully grafted on Fe3O4 nanoparticles surface and the modified Fe3O4 nanoparticles were well dispersed. The loss shear modulus G'' of Fe3O4 nanofluids was significantly greater than the storage shear modulus G' at room temperature, which confirms the typical fluid-behavior. Great stability and good flowability are well maintained after standing for a year at room temperature.
Key wordsinorganic non-metallic materials    magnetic nanoparticles    surface modification    solvent–free nanofluids    solid–liquid transformation
收稿日期: 2011-08-08     
ZTFLH: 

TB381

 
基金资助:

国家自然科学基金51073129、航空基金2010ZF53060和西北工业大学研究生创业种子基金Z2011012资助项目。

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