Hybrid Biodegradable Nanocomposites Based on a Biopolyester Matrix and Magnetic Iron Oxide Nanoparticles: Structural, Magnetic, and Electronic Characteristics.

Autor: Prusakov, V. E., Maksimov, Yu. V., Nishchev, K. N., Golub’ev, A. V., Beglov, V. I., Krupyanskii, Yu. F., Bychkova, A. V., Iordanskii, A. L., Berlin, A. A.
Zdroj: Russian Journal of Physical Chemistry B: Focus on Physics; Jan2018, Vol. 12 Issue 1, p158-164, 7p
Abstrakt: The structural, electronic, and magnetic properties of iron oxide nanoparticles encapsulated in hybrid biodegradable therapeutic systems based on poly-3-hydroxybutyrate and chitosan are comprehensively studied using Mössbauer spectroscopy, X-ray diffraction, small-angle X-ray scattering, and macroscopic magnetization measurements. It is shown that iron oxide in concentrations of 4 and 8 wt % in the polymer matrix of magnetically isotropic and magnetoanisotropic systems exists in the form of nanosized (d ≈ 7-8 nm) superparamagnetic clusters. Iron oxide clusters have the structure of a nonstoichiometric inverse spinel, intermediate between polymorphous modifications of Fe3O4 and γ-Fe2O3. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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