Rheological Study of Dextran-Modified Magnetite Nanoparticle Water Suspension

The aim of this work is to investigate the effect of surface modification of superparamagnetic magnetite nanoparticles (sterically stabilized by sodium oleate) by the dextran biocompatible layer on the rheological behavior of water-based magnetic fluids. The flow curves were measured as a function o...

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Bibliographic Details
Published inInternational journal of thermophysics Vol. 34; no. 4; pp. 609 - 619
Main Authors Józefczak, A., Hornowski, T., Rozynek, Z., Skumiel, A., Fossum, J. O.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.04.2013
Subjects
Classical Mechanics
Condensed Matter Physics
Dextrans
Industrial Chemistry/Chemical Engineering
Magnetic fields
Magnetic fluids
Magnetite
Physical Chemistry
Physics
Physics and Astronomy
Rheological properties
Rheometry
Strength
Viscosity
Nanoparticles
Magnetic fluid
Fluid flow
Rheological properties
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Summary:The aim of this work is to investigate the effect of surface modification of superparamagnetic magnetite nanoparticles (sterically stabilized by sodium oleate) by the dextran biocompatible layer on the rheological behavior of water-based magnetic fluids. The flow curves were measured as a function of the magnetic field strength by means of rheometry. The measured viscosity is generally dependent on both the particle concentration and the geometrical factors such as the particle shape and thickness of the adsorbed layers. The rheological properties of the magnetic fluids studied show the effect of the magnetic field strength and the presence of the surfactant second layer (dextran) on their viscosity.
Bibliography:ObjectType-Article-1
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ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-013-1439-6