Materials Science and Engineering C, volume 45, pages 225-233

In situ synthesis and characterization of magnetic nanoparticles in shells of biodegradable polyelectrolyte microcapsules

Publication typeJournal Article
Publication date2014-12-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor7.9
ISSN09284931, 18730191
Bioengineering
Biomaterials
Mechanics of Materials
Abstract
Hollow microcapsules with the shell composed of biodegradable polyelectrolytes modified with the maghemite nanoparticles were fabricated by in situ synthesis. The nanoparticles were synthesized from the iron salt and the base directly on the capsule shells prepared by “layer by layer” technique. An average diameter of the capsule was about 6.7 μm while the average thickness of the capsule shell was 0.9 μm. XRD, HRTEM, Raman and Mössbauer spectroscopy data revealed that the iron oxide nanoparticles have the crystal structure of maghemite γ-Fe 2 O 3 . The nanoparticles were highly monodisperse with medium size of 7.5 nm. The Mössbauer spectroscopy data revealed that the nanoparticles have marked superparamagnetic behavior which was retained up to room temperature due to slow spin relaxation. Because of that, the microcapsules can be handled by an external magnetic field. Both these properties are important for target drug delivery. Based on the Mössbauer spectroscopy data, the spin blocking temperatures T B of about 90 K was found for the particles with size D ≤ 5 nm and T B ≈ 250 K for particles with D ≥ 6 nm. The anisotropy constants K were determined using the superparamagnetic approximation and in the low temperature approximation of collective magnetic excitation. • Hollow biodegradable microcapsules for target drug delivery • Modification of microcapsules by the maghemite nanoparticles by in situ synthesis • The nanoparticles are highly monodisperse with medium size of 7.5 nm. • Superparamagnetic properties of nanoparticles remain up to room temperature. • The spin blocking temperatures T B and the anisotropy constants K are determined.

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LYUBUTIN I. et al. In situ synthesis and characterization of magnetic nanoparticles in shells of biodegradable polyelectrolyte microcapsules // Materials Science and Engineering C. 2014. Vol. 45. pp. 225-233.
GOST all authors (up to 50) Copy
LYUBUTIN I., STARCHIKOV S., Bukreeva T., Lysenko I. A., Sulyanov S. N., Korotkov N. Yu., Rumyantseva S. S., Marchenko I. V., Funtov K. O., Vasiliev A. L. In situ synthesis and characterization of magnetic nanoparticles in shells of biodegradable polyelectrolyte microcapsules // Materials Science and Engineering C. 2014. Vol. 45. pp. 225-233.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.msec.2014.09.017
UR - https://doi.org/10.1016%2Fj.msec.2014.09.017
TI - In situ synthesis and characterization of magnetic nanoparticles in shells of biodegradable polyelectrolyte microcapsules
T2 - Materials Science and Engineering C
AU - Lysenko, I A
AU - Korotkov, N Yu
AU - Rumyantseva, S S
AU - Marchenko, I V
AU - Funtov, K. O.
AU - Bukreeva, T.V.
AU - Sulyanov, S. N.
AU - LYUBUTIN, I.S.
AU - STARCHIKOV, S.S.
AU - Vasiliev, Alexander L
PY - 2014
DA - 2014/12/01 00:00:00
PB - Elsevier
SP - 225-233
VL - 45
SN - 0928-4931
SN - 1873-0191
ER -
BibTex
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BibTex Copy
@article{2014_LYUBUTIN,
author = {I A Lysenko and N Yu Korotkov and S S Rumyantseva and I V Marchenko and K. O. Funtov and T.V. Bukreeva and S. N. Sulyanov and I.S. LYUBUTIN and S.S. STARCHIKOV and Alexander L Vasiliev},
title = {In situ synthesis and characterization of magnetic nanoparticles in shells of biodegradable polyelectrolyte microcapsules},
journal = {Materials Science and Engineering C},
year = {2014},
volume = {45},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016%2Fj.msec.2014.09.017},
pages = {225--233},
doi = {10.1016/j.msec.2014.09.017}
}
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