About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Biomass-dependent Mechanical Properties of 3D-printed PLA/Organosolv Lignin Composites |
Author(s) |
John Obielodan, Tyler Tinkey, Kyle Brown, Peter Leonhardt, David Knabe |
On-Site Speaker (Planned) |
John Obielodan |
Abstract Scope |
The potentials of plant and wood biomass resources as viable alternatives to petroleum-derived polymers for the fabrication of engineering parts has been an active research focus. Herein we present the results of work showing the dependency of mechanical properties of 3D printed PLA/organosolv lignin biocomposites on lignin biomass resource. Organosolv lignin samples derived from both hardwood and softwood were respectively incorporated into PLA matrices and used for printing test samples using fused filament fabrication process. Significantly higher tensile strengths were obtained up to 100% for the hardwood-based material over the softwood for compositions up to 40wt% lignin, although with a trade-off on ductility. Also, room temperature aging of the hardwood-based material led to increase in mechanical properties that was not observed in the other material. The study highlights the competitiveness of the mechanical properties of 3D printed biocomposites based on informed choice of biomass resource and possible post processing aging. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |