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<p>This study investigates the development of a tribo-material by reinforcing HNT at different weight percentages (1.5 and 3%) into polylactic acid (PLA) biopolymer matrix with alkali-treated kenaf (K) and bamboo (B) natural fibers through hybridization using compression molding process. This research focuses on evaluating thermal and tribological properties of the developed sustainable hybrid biocomposites. The maximum peak degradation temperature of hybrid nanocomposite was found to be enhanced by 4.48% due to the addition of nanofiller in the matrix compared to the hybrid composite without nanofiller. The tribological performance of the developed composites was assessed under dry contact conditions using a pin-on-disc wear test setup to evaluate the effects of speed (1, 2 and 3&#xa0;m/s), and applied load (10, 20 and 30&#xa0;N) on the specific wear rate (SWR) and coefficient of friction (COF). The results indicate that the addition of HNT at 1.5% enhanced the tribological resistance of the material developed. A multi-objective optimization was conducted using non-dominated sorting based on the Pareto front, followed by fitness evaluations to determine the optimal combination of input parameters. The optimal minimum values of SWR and COF were achieved with a parameter combination of 30 N load and speed of 3&#xa0;m/s for the composite containing 1.5 wt. % HNT filler. Scanning electron microscopy (SEM) was employed to analyze the worn surfaces, providing insights into the wear mechanisms of the developed composites for tribological applications.</p>

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Optimization of tribological performance parameters with varying percentage of Halloysite nanotube in polylactic acid/bamboo/kenaf hybrid sustainable biocomposites

  • 期刊论文

  • 发表日期：

    2025年9月20日

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  • Chaiki Malakar,
  • R. Ravivarman,
  • Sushmita Deka

摘要

This study investigates the development of a tribo-material by reinforcing HNT at different weight percentages (1.5 and 3%) into polylactic acid (PLA) biopolymer matrix with alkali-treated kenaf (K) and bamboo (B) natural fibers through hybridization using compression molding process. This research focuses on evaluating thermal and tribological properties of the developed sustainable hybrid biocomposites. The maximum peak degradation temperature of hybrid nanocomposite was found to be enhanced by 4.48% due to the addition of nanofiller in the matrix compared to the hybrid composite without nanofiller. The tribological performance of the developed composites was assessed under dry contact conditions using a pin-on-disc wear test setup to evaluate the effects of speed (1, 2 and 3 m/s), and applied load (10, 20 and 30 N) on the specific wear rate (SWR) and coefficient of friction (COF). The results indicate that the addition of HNT at 1.5% enhanced the tribological resistance of the material developed. A multi-objective optimization was conducted using non-dominated sorting based on the Pareto front, followed by fitness evaluations to determine the optimal combination of input parameters. The optimal minimum values of SWR and COF were achieved with a parameter combination of 30 N load and speed of 3 m/s for the composite containing 1.5 wt. % HNT filler. Scanning electron microscopy (SEM) was employed to analyze the worn surfaces, providing insights into the wear mechanisms of the developed composites for tribological applications.