Abstract
Magnetic nanofibres have attracted more and more attention recently due to their possible applications e.g., in spintronics and neuromorphic computing. This work presents the synthesis and physicochemical characterization of the electrospun nanofibres of poly(ε-caprolactone) (PCL) doped by iron oxide nanoparticles with diameters of 5 nm. PCL is a semi-crystalline, hydrophilic polymer showing controllable biodegradation rates, biocompatibility, and flexible mechanical properties. In the composite material, two different concentrations of magnetic nanoparticles were used: 2 and 6 wt.%. PCL-based composites were investigated using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetry (TGA). Although in the literature one can find many studies on magnetic polymeric composites, the investigation of their magnetic properties is usually limited to measuring the magnetization curve. Detailed analysis of dynamic magnetic susceptibility is rather rare. In this report, special attention was paid to the detailed analysis of magnetic properties, where we followed the evolution of changes in the magnetic behavior of the material depending on the concentration of magnetic nanoparticles.
Highlights
By combining magnetic and polymeric materials, composites with exceptional properties can be obtained. They give a real chance for future applications in sensors, intelligent coatings, or in medicine, where they are considered as targeted drug delivery systems [2] as well as for cancer therapies [3]
The thermal stability of the pristine PCL and PCL/Fe3 O4 nanocomposites was investigated by TGA
We focused the attention on the role of particle agglomeration on dynamic magnetic properties
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. There is a strong industrial demand for materials with a high level of multifunctionality. Access to multi-functionality at the nanoscale requires the development of hybrid nanostructures that combine materials of different natures. One of the examples of such nanocomposites is polymers doped with inorganic magnetic nanoparticles [1]. By combining magnetic and polymeric materials, composites with exceptional properties can be obtained. Thanks to this, they give a real chance for future applications in sensors, intelligent coatings, or in medicine, where they are considered as targeted drug delivery systems [2] as well as for cancer therapies [3]
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