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Published on: July 4, 2017
[Preparation and characterization of a polyvinylpyrrolidone water-based magnetic fluid]
Jian-feng Xie1, Yang-de Zhang, Zhao-wu Zeng
1Institute of Biomedical Engineering, Central South University, Changsha 410008, China.
Objective:
To prepare a stable water-based magnetic fluid.
Methods:
A water-based magnetic fluid was prepared by addition of polyvinylpyrrolidone (PVP) as the coating agent for the magnetic particles. After preparation of Fe3O4 by co-precipitation method, PVP was added for its coating, followed by ultrasonic agitation and purification.
Results:
The magnetic nanoparticles of homogeneously small size and water-based magnetic fluid were obtained, which had good dispersion in water with strong magnetism.
Conclusion:
PVP can be used as a surfactant to stabilize the magnetic fluid.
