The investigated nanocomposites are characterized by more uniform distribution of amorphous and crystal phases. An optimal number of crystallization centers - nanoparticles leads to improve mechanical properties of polyethylenes. Introduction of nanofillers into a polymer matrix leads to the formation of cryptocrystalline supermolecular structure by reducing of the thermodynamic threshold of crystallization.

Keywords: low-pressure polyethylene, magnesium spinel, zeolites, nanofiller, the degree of crystallinity, X-ray diffraction, atomic force microscopy