Javid Sharifi, Dylan Jubinville, Tizazu H. Mekonnen, Haniyeh Ramona Fayazfar
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Systematic Optimization of FDM 3D Printing Parameters for PLA: PBAT–Hemp Composites Using Taguchi Design
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.
期刊介绍：
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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