The article presents the results of a study of inorganic-polymer nanocomposites Nafion/thermally expanded graphite and Nafion/carbon black by nuclear magnetic resonance and thermogravimetry. The structure of carbon materials was characterized by electron microscopy and adsorption structural analysis by lowtemperature nitrogen adsorption. The presence of the interaction of Nafion polymer and carbon material at the interface between the components leading to thermal stabilization of the composites is shown, and the differences between thermally expanded graphite and carbon black due to their morphology during interaction with Nafion are discussed.

In this work, the aggregation of nanoparticles in an aqueous colloidal solution of magnetite, stabilized by creating a citrate shell on the particle surface is studied. Electron microscopy and laser correlation spectroscopy were used as experimental methods. Optical measurements were carried out both at zero external magnetic field and in the fields differently oriented relative to the probing laser beam. It is shown that the samples tend to form large aggregates even without the application of the field, and in the case of its presence the behavior of these structures has features that distinguish them from other magnetic fluids.