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Abstract <p>The effect of nickel oxide and cobalt oxide nanoparticles on the structure and properties of nanocomposites based on low-pressure polyethylene (LPPE) containing multi-walled carbon nanotubes (MWCNT) has been systematically investigated. Both, DTA and SEM analyses were employed to characterize the composites. The results show that the introduction of NiO or CoO nanoparticles into the LPPE/MWCNT matrix leads to a high degree of filler dispersion and the formation of a globular, finely crystalline supramolecular structure. Small amounts of these nanofillers act as artificial nucleation centers, promoting the development of a fine-spherulitic morphology, which significantly enhances the mechanical and thermal properties of the resulting nanocomposites. Specifically, the combined use of CoO nanoparticles and MWCNT in LPPE increases the tensile strength from 25.41 to 32.59 MPa while maintaining elongation, and raises the activation energy from 153.64 to 205.8 kJ/mol with a twofold reduction in mass loss, indicating improved thermal and oxidative stability. Similarly, NiO nanoparticles contribute to improvements in strength, deformation parameters, and thermal–oxidative resistance, which can be attributed to structural stabilization of the polymer matrix. These findings demonstrate that metal oxide nanoparticles, in combination with carbon nanotubes, effectively reinforce LPPE nanocomposites by enhancing both their supramolecular organization and functional properties.</p>

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Obtain and Study of LPPE–Carbon Nanotube Nanocomposites Containing Metal (Co,Ni) Oxide Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • N. A. Mirzoeva,
  • N. I. Kurbanova,
  • A. B. Huseynov,
  • E. B. Zeynalov

摘要

Abstract

The effect of nickel oxide and cobalt oxide nanoparticles on the structure and properties of nanocomposites based on low-pressure polyethylene (LPPE) containing multi-walled carbon nanotubes (MWCNT) has been systematically investigated. Both, DTA and SEM analyses were employed to characterize the composites. The results show that the introduction of NiO or CoO nanoparticles into the LPPE/MWCNT matrix leads to a high degree of filler dispersion and the formation of a globular, finely crystalline supramolecular structure. Small amounts of these nanofillers act as artificial nucleation centers, promoting the development of a fine-spherulitic morphology, which significantly enhances the mechanical and thermal properties of the resulting nanocomposites. Specifically, the combined use of CoO nanoparticles and MWCNT in LPPE increases the tensile strength from 25.41 to 32.59 MPa while maintaining elongation, and raises the activation energy from 153.64 to 205.8 kJ/mol with a twofold reduction in mass loss, indicating improved thermal and oxidative stability. Similarly, NiO nanoparticles contribute to improvements in strength, deformation parameters, and thermal–oxidative resistance, which can be attributed to structural stabilization of the polymer matrix. These findings demonstrate that metal oxide nanoparticles, in combination with carbon nanotubes, effectively reinforce LPPE nanocomposites by enhancing both their supramolecular organization and functional properties.