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<p>In this research, hybrid epoxy nanocomposites incorporating chitosan (CS) and functionalized multi-walled carbon nanotubes (MWCNTs) were developed using a manual lamination approach. Initially, the optimal CS content was established to maximise mechanical performance by synthesising CS/epoxy nanocomposites with various volume fractions of CS (0 to 12% in steps of 3%). Based on this, a fixed CS concentration (3%) was maintained while varying MWCNT loading (0.1–0.5% by volume) to fabricate the hybrid CS/MWCNT/epoxy nanocomposites, along with a control sample with 0.1% MWCNT. The resulting materials were evaluated, including tensile and flexural strength, morphological (SEM and EDS) inspection, FTIR spectroscopy, and dynamic mechanical analysis. Among all formulations, the CS3CN1E hybrid composite (3%-CS and 0.1%-MWCNT) showed optimal performance with a tensile strength of 35.74&#xa0;MPa, load capacity of 2.68 kN, and enhanced strain (1.28&#xa0;mm/mm) with an improved flexural strength (10.3%), modulus (21.3%) and ILSS (22.5%) over the control sample. FTIR and DMA results confirmed a better molecular interaction, structural ordering, and viscoelastic behaviour, making CS3CN1E suitable for structural applications of low-load bearing components. Based on their properties, it was understood that a slight modification in the constituents may also enhance the possibility of use in biomedical applications (implants and medical devices).</p>

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Synthesis and mechanical characterization of hybrid (chitosan–MWCNT-reinforced epoxy) polymeric nanocomposite and low load applications

  • 期刊论文

  • 发表日期：

    2026年1月16日

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  • Ranva Sai Sahithi,
  • Usha Rani Sahoo,
  • Naveen Kumar Akkasali,
  • Trupti Ranjan Mahapatra,
  • Ashish Kumar Meher,
  • Gaurav Kumar,
  • Subrata Kumar Panda

摘要

In this research, hybrid epoxy nanocomposites incorporating chitosan (CS) and functionalized multi-walled carbon nanotubes (MWCNTs) were developed using a manual lamination approach. Initially, the optimal CS content was established to maximise mechanical performance by synthesising CS/epoxy nanocomposites with various volume fractions of CS (0 to 12% in steps of 3%). Based on this, a fixed CS concentration (3%) was maintained while varying MWCNT loading (0.1–0.5% by volume) to fabricate the hybrid CS/MWCNT/epoxy nanocomposites, along with a control sample with 0.1% MWCNT. The resulting materials were evaluated, including tensile and flexural strength, morphological (SEM and EDS) inspection, FTIR spectroscopy, and dynamic mechanical analysis. Among all formulations, the CS3CN1E hybrid composite (3%-CS and 0.1%-MWCNT) showed optimal performance with a tensile strength of 35.74 MPa, load capacity of 2.68 kN, and enhanced strain (1.28 mm/mm) with an improved flexural strength (10.3%), modulus (21.3%) and ILSS (22.5%) over the control sample. FTIR and DMA results confirmed a better molecular interaction, structural ordering, and viscoelastic behaviour, making CS3CN1E suitable for structural applications of low-load bearing components. Based on their properties, it was understood that a slight modification in the constituents may also enhance the possibility of use in biomedical applications (implants and medical devices).