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<p>The current study investigates the effects of fused deposition modeling 3D printing process parameters on the mechanical properties of poly(lactic acid): poly(butylene adipate terephthalate)-based hemp composites, with the goal of enhancing material performance and supporting sustainable manufacturing. A highly filled hemp hurd biocomposite formulation was developed and optimized using Taguchi design of experiments, exploring the influence of eight key fused deposition modeling 3D printing parameters. The results reveal that print orientation and nozzle temperature significantly affect tensile strength and modulus, while flow rate and nozzle diameter have a dominant influence on elongation at break. The best-performing specimens achieved tensile strength and modulus values of 16.7&#xa0;MPa and 1.6 GPa, respectively, while samples optimized for ductility exhibited elongation of up to 1.8%. Deviations between experimental and theoretical predictions, up to 9.1% for tensile strength and 1.7% for elongation, highlight the complexity of parameter interactions. SEM analysis confirmed improved interlayer adhesion in flat-on-bed printed samples, correlating with enhanced mechanical properties.</p>

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Systematic Optimization of FDM 3D Printing Parameters for PLA: PBAT–Hemp Composites Using Taguchi Design

  • 期刊论文

  • 发表日期：

    2025年6月11日

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  • Javid Sharifi,
  • Dylan Jubinville,
  • Tizazu H. Mekonnen,
  • Haniyeh Ramona Fayazfar

摘要

The current study investigates the effects of fused deposition modeling 3D printing process parameters on the mechanical properties of poly(lactic acid): poly(butylene adipate terephthalate)-based hemp composites, with the goal of enhancing material performance and supporting sustainable manufacturing. A highly filled hemp hurd biocomposite formulation was developed and optimized using Taguchi design of experiments, exploring the influence of eight key fused deposition modeling 3D printing parameters. The results reveal that print orientation and nozzle temperature significantly affect tensile strength and modulus, while flow rate and nozzle diameter have a dominant influence on elongation at break. The best-performing specimens achieved tensile strength and modulus values of 16.7 MPa and 1.6 GPa, respectively, while samples optimized for ductility exhibited elongation of up to 1.8%. Deviations between experimental and theoretical predictions, up to 9.1% for tensile strength and 1.7% for elongation, highlight the complexity of parameter interactions. SEM analysis confirmed improved interlayer adhesion in flat-on-bed printed samples, correlating with enhanced mechanical properties.