Dimensional analysis of aqueous magnetic fluids |
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Authors: | M R?cuciu DE Creang? N Suli?anu V B?descu |
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Institution: | (1) Faculty of Science, “Lucian Blaga” University, 5–7 Dr. I. Ratiu Street, 550024 Sibiu, Romania;(2) Faculty of Physics, Al. I. Cuza University, 11A Blvd. Copou, 700506 Iasi, Romania;(3) National Institute of Research and Development for Technical Physics, 47 Blvd. D. Mangeron, Iasi, Romania |
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Abstract: | A comparison of the synthesis and characterization of three aqueous magnetic fluids intended for biomedical applications is
presented. Stable colloidal suspensions of iron oxide nanoparticles were prepared by a co-precipitation method with the magnetite
cores being coated with β-cyclodextrin, tetramethylammonium hydroxide and citric acid. Rheological properties of the fluids
were investigated, i.e. viscosity (capillary method) and surface tension (stalagmometric method) in correlation with their
density (picnometric method). The dimensional distributions of the ferrophase particles physical diameter of these three magnetic
fluids – revealed on the basis of transmission electron microscopy (TEM) data – as well as the diameter distributions of some
other magnetic fluids presented in the literature, were comparatively analyzed using the box-plot statistical method. In order
to extract complementary data on the magnetic diameter of an iron oxide core, magnetization measurements as well as X-ray
diffraction pattern analysis were carried out. Interpretation of all the measurement data was accomplished by assessing the
suitability of the three magnetic fluid samples from the viewpoint of their stability and biocompatibility.
PACS 75.50.Mm; 61.46.Df; 68.37.Lp; 96.15.Pf; 75.75.+a |
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