Submicron Structure in Biocompatible Ferrofluids

• Authors: G Matei , A Airinei , D Creanga
• Languages of publication: EN

Abstracts

EN

This paper presents a comparative study between the microstructural features of two water-ferrofluids intended for biological applications. In both cases the ferrophase was prepared by auto-catalytic reaction between ferrous and ferric salts and resulted in magnetite and some maghemite precipitates. The difference is given by the stabilizer molecule: tetramethylammonium hydroxide and, respectively, citric acid. Transmission electron microscopy and atomic force microscopy were utilized for ferrophase size investigation. The evidence of short chains and large aggregates was obtained mainly by atomic force microscopy analysis (the tip diameter being equal to 5 nm). Their role in the ferrofluid rheological properties was studied by carrying out comparative measurements of viscosity and surface tension. Complementary investigation of the ferrofluid composition was done by means of IR absorption spectra. The suitability of the prepared ferrofluids for biological goals was proved by their convenient ferrophase diameter as well as by their stability in time.

Keywords

EN

68.37.Lp; 68.37.Ps; 78.30.-j

Discipline

• 68.37.Lp: Transmission electron microscopy (TEM)
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)
• 68.37.Ps: Atomic force microscopy (AFM)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 109
• Issue: 3
• Pages: 405-409

Dates

published

2006-03

received

2005-05-20

Contributors

author

G Matei

• Univ. Al. I. Cuza, Fac. of Physics, Iasi, Romania

author

A Airinei

• P. Poni Macromolecular Chemistry Institute , Iasi, Romania

author

D Creanga

• Univ. Al. I. Cuza, Fac. of Physics, Iasi, Romania

References

• 1. C. Rocchioli-Dectchoff, R. Frank, V. Cabuil, R.J. Massart, J. Chem. Res., 3, 67, 1967
• 2. C. Cotae, Z. Kelemen, N. Olaru, M. Cotae, Patent Ro, 93111, 1986
• 3. D. Creanga, Gh. Calugaru, J. Magn. Magn. Mater., 289, 81, 2005
• 4. R.E. Rosenweig, Ferrohydrodynamics, Cambridge University Press, New York 1985
• 5. D.S. Todorovsky, D.G. Dumanova, R.V. Todorovska, M.M. Getsova, Croatica Chem. Acta, 75, 155, 2002

Identifiers

DOI

10.12693/APhysPolA.109.405