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<p>The pursuit of sustainable engineering materials has intensified interest in transforming agro-waste into functional reinforcements for polymer composites. In this work, sugarcane bagasse (SCB) is utilized to develop biocomposites with polylactic acid (PLA) and high-density polyethylene (HDPE), targeting tribological applications. A Taguchi-based experimental design supported by signal-to-noise ratio analysis and ANOVA was applied to unravel the influence of fiber content, load and sliding speed on friction and wear behavior. The results establish clear distinctions between the two thermoplastic matrices: in PLA composites, wear resistance was mainly influenced by fiber content, while friction was governed by load; in HDPE composites, wear performance depended more strongly on load whereas friction was shaped by the combined effects of load and fiber content. Regression models developed for both materials exhibited strong predictive accuracy with R² values exceeding 90%, confirming the reliability of the experimental design. Morphological examinations using SEM, 2D depth and 3D surface profiles provided clear mechanistic evidence of the influence of fiber loading and test parameters on wear evolution. These findings underscore the reinforcing potential of SCB in enhancing the tribological performance of thermoplastic matrices and highlight their suitability for practical use in industrial components such as gears, bearings, and sliding elements where wear resistance and sustainability are critical.</p>

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Wear and Friction Behavior of PLA and HDPE Composites Reinforced with Sugarcane Bagasse Fibers

  • 期刊论文

  • 发表日期：

    2026年1月15日

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  • Resego Phiri,
  • Mavinkere Rangappa Sanjay,
  • Pudhupalayam Muthukutti Gopal,
  • Vijayananth Kavimani,
  • Suchart Siengchin

摘要

The pursuit of sustainable engineering materials has intensified interest in transforming agro-waste into functional reinforcements for polymer composites. In this work, sugarcane bagasse (SCB) is utilized to develop biocomposites with polylactic acid (PLA) and high-density polyethylene (HDPE), targeting tribological applications. A Taguchi-based experimental design supported by signal-to-noise ratio analysis and ANOVA was applied to unravel the influence of fiber content, load and sliding speed on friction and wear behavior. The results establish clear distinctions between the two thermoplastic matrices: in PLA composites, wear resistance was mainly influenced by fiber content, while friction was governed by load; in HDPE composites, wear performance depended more strongly on load whereas friction was shaped by the combined effects of load and fiber content. Regression models developed for both materials exhibited strong predictive accuracy with R² values exceeding 90%, confirming the reliability of the experimental design. Morphological examinations using SEM, 2D depth and 3D surface profiles provided clear mechanistic evidence of the influence of fiber loading and test parameters on wear evolution. These findings underscore the reinforcing potential of SCB in enhancing the tribological performance of thermoplastic matrices and highlight their suitability for practical use in industrial components such as gears, bearings, and sliding elements where wear resistance and sustainability are critical.