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<p>This study investigates the enhancement of mechanical and wear properties of polylactic acid (PLA) reinforced with graphene nanoparticles (GNPs) to address PLA’s limitations in wear-intensive environments. By incorporating varying concentrations of GNPs (0.5–2 wt%), significant improvements were observed, with the PLA + 1.5 wt% GNP composite achieving optimal performance. Key findings include a 68.9% increase in hardness and a 67.4% reduction in wear rate compared to pure PLA, attributed to effective nanoparticle dispersion and interfacial bonding. Surface morphology and elemental analysis validated the reinforcement effects, although higher GNP concentrations led to agglomeration, reducing efficiency. These results highlight the potential of GNP-reinforced PLA composites for applications requiring high mechanical strength and wear resistance, particularly in sustainable 3D-printed products. Future research should focus on improving nanoparticle dispersion techniques and exploring dynamic operational conditions to further optimize material performance.</p>

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Mechanical and Tribological Enhancement of Graphene-Reinforced PLA Composites for Sustainable Applications

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Vijay Kumar,
  • Nikhil Bharat,
  • Vishal Mishra

摘要

This study investigates the enhancement of mechanical and wear properties of polylactic acid (PLA) reinforced with graphene nanoparticles (GNPs) to address PLA’s limitations in wear-intensive environments. By incorporating varying concentrations of GNPs (0.5–2 wt%), significant improvements were observed, with the PLA + 1.5 wt% GNP composite achieving optimal performance. Key findings include a 68.9% increase in hardness and a 67.4% reduction in wear rate compared to pure PLA, attributed to effective nanoparticle dispersion and interfacial bonding. Surface morphology and elemental analysis validated the reinforcement effects, although higher GNP concentrations led to agglomeration, reducing efficiency. These results highlight the potential of GNP-reinforced PLA composites for applications requiring high mechanical strength and wear resistance, particularly in sustainable 3D-printed products. Future research should focus on improving nanoparticle dispersion techniques and exploring dynamic operational conditions to further optimize material performance.