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. 2022 Nov 25;23(23):14764.
doi: 10.3390/ijms232314764.

Effect of the Synthetic Approach on the Formation and Magnetic Properties of Iron-Based Nanophase in Branched Polyester Polyol Matrix

Artur Khannanov  1 , Anastasia Burmatova  1 , Klara Ignatyeva  1 , Farit Vagizov  2 , Airat Kiiamov  2 , Dmitrii Tayurskii  2 , Mikhail Cherosov  2 , Alexander Gerasimov  1 , Evtugyn Vladimir  3 , Marianna Kutyreva  1
Affiliations

Effect of the Synthetic Approach on the Formation and Magnetic Properties of Iron-Based Nanophase in Branched Polyester Polyol Matrix

Artur Khannanov et al. Int J Mol Sci. .

Abstract

This article shows the success of using the chemical reduction method, the polyol thermolytic process, the sonochemistry method, and the hybrid sonochemistry/polyol process method to design iron-based magnetically active composite nanomaterials in a hyperbranched polyester polyol matrix. Four samples were obtained and characterized by transmission and scanning electron microscopy, infrared spectroscopy and thermogravimetry. In all cases, the hyperbranched polymer is an excellent stabilizer of the iron and iron oxides nanophase. In addition, during the thermolytic process and hybrid method, the branched polyol exhibits the properties of a good reducing agent. The use of various approaches to the synthesis of iron nanoparticles in a branched polyester polyol matrix makes it possible to control the composition, geometry, dispersity, and size of the iron-based nanophase and to create new promising materials with colloidal stability, low hemolytic activity, and good magnetic properties. The NMR relaxation method proved the possibility of using the obtained composites as tomographic probes.

Keywords: hyperbranched polyesters; iron oxide nanoparticles; synthetic approach; zero-valent nanoparticles.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
TEM image of particles ChemRed-NP (A), US/TermRed-NP (B), US-NP (C) with inserts of histogram of particle size distribution.
Figure 2
Figure 2
SEM images of particles ChemRed-NP (A), TermRed-NP (B), US/TermRed-NP (C), US-NP (D) with inserts of histogram of particle size distribution.
Figure 3
Figure 3
FT-IR spectra of hyperbranched polyester and samples ChemRed-NP, TermRed-NP, US/TermRed-NP, and US-NP: (A) full spectrum; (B) fingerprint area.
Figure 4
Figure 4
TG analysis of hyperbranched polyester BH20 and samples of ChemRed-NP, US/TermRed-NP, and US-NP.
Figure 5
Figure 5
XRD spectra of (A) ChemRed-NP; (B) US/TermRed-NP; (C) US-NP.
Figure 6
Figure 6
Mossbauer spectra of (A) ChemRed-NP; (B) US/TermRed-NP; (C) US-NP.
Figure 7
Figure 7
Magnetic hysteresis: (A) ChemRed-NP, (B) US/TermRed-NP, (C) US-NP; FC/ZFC curve: (D) ChemRed-NP; (E) US/TermRed-NP; (F) US-NP.
Figure 8
Figure 8
(A) Transverse dependence of relaxation on time; (B) longitudinal dependence of relaxation on time.
Figure 9
Figure 9
NTA analysis of nanocomposites dispersion: (A) ChemRed-NP (RMSE = 0.9995; χ2 = 7.6 × 10−4); (B) TermRed-NP (RMSE = 0.9998; χ2 = 1.5 × 10−4); (C) US/TermRed-NP (RMSE = 0.9999; χ2 = 3.3 × 10−5); (D) US-NP (RMSE = 0.9993; χ2 = 6.5 × 10−4) in aqueous solutions (cNP = 0.1 mg·mL−1).
Figure 10
Figure 10
Hemolysis of the ChemRed-NP, TermRed-NP, US/TermRed-NP, and US-NP.
See this image and copyright information in PMC

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