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<p>Epoxy nanocomposites reinforced with molybdenum disulfide (MoS<sub>2</sub>) nanosheets were successfully developed by the hand layup method at low filler content (&lt; 1 wt %). The possible interactions between MoS<sub>2</sub> and the matrix were examined by X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), confirming good dispersion and matrix compatibility. Among the formulations, the nanocomposite containing 0.5 wt% MoS<sub>2</sub> demonstrated outstanding mechanical properties, with tensile strength, Young’s modulus, and fracture toughness improving by 109%, 182%, and 93%, respectively, compared to EP. Fracture surface analysis using Field Emission Scanning Electron Microscopy (FESEM) revealed various bonding mechanisms influenced by the nanosheets. Micromechanical modelling was conducted to validate the mechanical behaviour of the nanocomposite systems. Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques assessed thermal stability and curing characteristics. Kinetic and thermodynamic parameters, including activation energy of thermal degradation, were calculated using Coats-Redfern and Horowitz-Metzger models. The dispersion and exfoliation of MoS<sub>2</sub> were verified using Transmission Electron Microscopy (TEM). The results demonstrate that MoS<sub>2</sub> is an efficient nanofiller, significantly enhancing epoxy’s mechanical and thermal properties at very low loadings.</p>

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Augmentation of strength, fracture toughness, curing behaviour and thermal degradation properties of epoxy nanocomposites by MoS2 nanosheets: an experimental and analytical approach

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Abhiram Menon,
  • Boddu Vivek,
  • Gopal Krishna Bhagavatula,
  • Snaha Leena,
  • Rasana Nanoth,
  • Jayanarayanan Karingamanna

摘要

Epoxy nanocomposites reinforced with molybdenum disulfide (MoS2) nanosheets were successfully developed by the hand layup method at low filler content (< 1 wt %). The possible interactions between MoS2 and the matrix were examined by X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), confirming good dispersion and matrix compatibility. Among the formulations, the nanocomposite containing 0.5 wt% MoS2 demonstrated outstanding mechanical properties, with tensile strength, Young’s modulus, and fracture toughness improving by 109%, 182%, and 93%, respectively, compared to EP. Fracture surface analysis using Field Emission Scanning Electron Microscopy (FESEM) revealed various bonding mechanisms influenced by the nanosheets. Micromechanical modelling was conducted to validate the mechanical behaviour of the nanocomposite systems. Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques assessed thermal stability and curing characteristics. Kinetic and thermodynamic parameters, including activation energy of thermal degradation, were calculated using Coats-Redfern and Horowitz-Metzger models. The dispersion and exfoliation of MoS2 were verified using Transmission Electron Microscopy (TEM). The results demonstrate that MoS2 is an efficient nanofiller, significantly enhancing epoxy’s mechanical and thermal properties at very low loadings.