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<p>The development and characterization of a new composite material consisting of silicon carbide (SiC) filler buried in a <i>Luffa cylindrica</i> fiber (LCF)-reinforced epoxy matrix for structural uses is investigated in this work. Analysed were the mechanical, thermal, antibacterial, and biofilm resistance characteristics of the composite to evaluate its possible uses in high-performance and multifarious contexts. Using different SiC filler percentages (1–5%), showed notable property improvements; the ideal performance was found at 4% SiC filler (sample S4). With a maximum tensile strength of 74.19&#xa0;MPa, flexural strength of 79.92&#xa0;MPa, impact strength of 19.42&#xa0;kJ/m², and Shore D hardness of 74, mechanical testing found that sample S4 exhibited better mechanical integrity than composites with either lower or greater filler content. Scanning electron microscopy verified the homogeneous dispersion of SiC nanoparticles, enhanced fiber-matrix interfacial bonding, and minimized defects, so guaranteeing efficient stress transfer. With mass retention of 12% at 600&#xa0;°C and a beginning decomposition temperature of 350&#xa0;°C, thermogravimetric analysis revealed improved thermal stability for sample S4, ascribed to the thermal reinforcement given by SiC nanoparticles. Using the agar well diffusion approach, sample S4’s antibacterial activity was evaluated against Escherichia coli and showed notable reduction of bacterial development. By lowering biofilm thickness and so upsetting bacterial colonization, confocal laser scanning microscopy confirmed even more the composite’s ability to prevent biofilm development, so showing its possible uses requiring antimicrobial characteristics. This work offers a possible route for the synthesis of multifarious, environmentally friendly materials for usage in biomedical, aerospace, and automotive sectors.</p>

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Effect of SiC Filler in Luffa Cylindrica Fiber-Reinforced Epoxy Matrix Composites: A Novel Material for Advanced Structural Applications

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Krishnasamy Karthik,
  • M. M. Rekha,
  • Bhanu Juneja,
  • Shakti Prakash Jena,
  • Geetika Madan Patel,
  • Nidhi Srivastava,
  • K. Kamakshi Priya

摘要

The development and characterization of a new composite material consisting of silicon carbide (SiC) filler buried in a Luffa cylindrica fiber (LCF)-reinforced epoxy matrix for structural uses is investigated in this work. Analysed were the mechanical, thermal, antibacterial, and biofilm resistance characteristics of the composite to evaluate its possible uses in high-performance and multifarious contexts. Using different SiC filler percentages (1–5%), showed notable property improvements; the ideal performance was found at 4% SiC filler (sample S4). With a maximum tensile strength of 74.19 MPa, flexural strength of 79.92 MPa, impact strength of 19.42 kJ/m², and Shore D hardness of 74, mechanical testing found that sample S4 exhibited better mechanical integrity than composites with either lower or greater filler content. Scanning electron microscopy verified the homogeneous dispersion of SiC nanoparticles, enhanced fiber-matrix interfacial bonding, and minimized defects, so guaranteeing efficient stress transfer. With mass retention of 12% at 600 °C and a beginning decomposition temperature of 350 °C, thermogravimetric analysis revealed improved thermal stability for sample S4, ascribed to the thermal reinforcement given by SiC nanoparticles. Using the agar well diffusion approach, sample S4’s antibacterial activity was evaluated against Escherichia coli and showed notable reduction of bacterial development. By lowering biofilm thickness and so upsetting bacterial colonization, confocal laser scanning microscopy confirmed even more the composite’s ability to prevent biofilm development, so showing its possible uses requiring antimicrobial characteristics. This work offers a possible route for the synthesis of multifarious, environmentally friendly materials for usage in biomedical, aerospace, and automotive sectors.