Preparation and characterization of magnetite/dextran nanocomposite used as a precursor of magnetic fluid |
| |
| Authors: | RY Hong JH Li JM Qu LL Chen HZ Li |
| |
| Affiliation: | aCollege of Chemistry, Chemical Engineering and Materials Science & Key Laboratory of Organic Synthesis of Jiangsu Province, Soochow University, SIP, Suzhou 215123, China;bState Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China |
| |
| Abstract: | Magnetic nanoparticles were synthesized by the co-precipitation of Fe2+ and Fe3+ using ammonium hydroxide (NH4OH). The obtained nanoparticles were characterized by X-ray powder diffraction, transmission electron microscopy, scanning electron microscopy, Fourier transform infrared (FT-IR) spectroscopy and vibrating sample magnetometer. In order to prepare a biocompatible water-based magnetic fluid, the nanoparticles were modified by dextran through a two-step method. The influences of dextran molecular weight on the size, morphology, coating efficiency and magnetic property of magnetite/dextran nanocomposite were investigated. The magnetite/dextran nanocomposite was dispersed in water to form a magnetic fluid by ball milling. The rheological property of magnetic fluids was investigated using a rotating rheometer. |
| |
| Keywords: | Nanoparticle Superparamagnetism Magnetic fluid Dextran Rheological property |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
