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<p>Agro‑waste residues such as sugarcane bagasse (SCB) remain underutilized despite their potential in sustainable composites. This study addresses the underexplored tribological performance of alkali‑treated SCB‑reinforced bioepoxy (BE) and unsaturated polyester resin (UPR) composites. Scratch hardness was evaluated under dry conditions, while wear behavior, coefficient of friction (COF) and specific wear rate (SWR) were optimized via a Taguchi L9 design across fiber loadings, applied loads and sliding speeds. ANOVA identified fiber loading as the most influential parameter, followed by load and speed. At 9&#xa0;wt&#xa0;% SCB, scratch hardness reached 0.402&#xa0;GPa (BE) and 0.678&#xa0;GPa (UPR), with minimum SWRs of 0.00063&#xa0;mm<sup>3</sup>·N⁻<sup>1</sup>·m⁻<sup>1</sup> (BE) and 0.00108&#xa0;mm<sup>3</sup>·N⁻<sup>1</sup>·m⁻<sup>1</sup> (UPR). Tribological results were validated by morphological analysis of wear scars: depth, width and surface texture provided direct evidence of material loss and wear mechanisms. Morphological observations confirmed severe abrasive wear at low fiber content and high loads, transitioning to milder wear mechanisms with higher reinforcement. These findings demonstrate the applicability of SCB‑reinforced thermosets in eco‑friendly tribological components for bearing and machinery applications.</p>

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Tribological Analysis of Treated Sugarcane Bagasse Loaded Bioepoxy/Unsaturated Polyester Composites

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Resego Phiri,
  • Sanjay Mavinkere Rangappa,
  • Suchart Siengchin

摘要

Agro‑waste residues such as sugarcane bagasse (SCB) remain underutilized despite their potential in sustainable composites. This study addresses the underexplored tribological performance of alkali‑treated SCB‑reinforced bioepoxy (BE) and unsaturated polyester resin (UPR) composites. Scratch hardness was evaluated under dry conditions, while wear behavior, coefficient of friction (COF) and specific wear rate (SWR) were optimized via a Taguchi L9 design across fiber loadings, applied loads and sliding speeds. ANOVA identified fiber loading as the most influential parameter, followed by load and speed. At 9 wt % SCB, scratch hardness reached 0.402 GPa (BE) and 0.678 GPa (UPR), with minimum SWRs of 0.00063 mm3·N⁻1·m⁻1 (BE) and 0.00108 mm3·N⁻1·m⁻1 (UPR). Tribological results were validated by morphological analysis of wear scars: depth, width and surface texture provided direct evidence of material loss and wear mechanisms. Morphological observations confirmed severe abrasive wear at low fiber content and high loads, transitioning to milder wear mechanisms with higher reinforcement. These findings demonstrate the applicability of SCB‑reinforced thermosets in eco‑friendly tribological components for bearing and machinery applications.