Abstract

The morphology and the microstructure of the nanocomposite hydrogels, prepared by free-radical polymerization of acrylamide monomer and double bond functionalized magnetite nanoparticles, were analysed by scanning electron microscopy. Nanostructural characteristic and crystalline structure were studied by high resolution transmission electron microscopy and selected area electron diffraction. Elemental composition was analysed by energy dispersive X-ray spectroscopy. In vitro biocompatibility evaluation was performedon specific cell lines. Keywords: magnetic nanoparticles, polyacrylamide, SEM, TEM, biocompatibility

Highlights

  • The morphology and the microstructure of the nanocomposite hydrogels, prepared by free-radical polymerization of acrylamide monomer and double bond functionalized magnetite nanoparticles, were analysed by scanning electron microscopy

  • The microstructure of the sample PAA-modified magnetite nanoparticles (MMNPs): 80-20is shown in figure 1A and 1B.White contrast areas correspond to high atomic number elements, whereas dark areas are specific to materials with low atomic number elements within the composition

  • The secondary electron image (SEI) in figure 1B, at 200.000x magnification, is a detail from the magnetite agglomerations embedded in the PAA matrix

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Summary

Introduction

The morphology and the microstructure of the nanocomposite hydrogels, prepared by free-radical polymerization of acrylamide monomer and double bond functionalized magnetite nanoparticles, were analysed by scanning electron microscopy. Magnetic nanocomposites were obtained from double bond modified magnetite nanoparticles (MMNPs) and acrylamide by redox polymerization reaction. The microstructure of the sample PAA-MMNPs: 80-20is shown in figure 1A and 1B.White contrast areas correspond to high atomic number elements, whereas dark areas are specific to materials with low atomic number elements within the composition.

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