Direct extrusion 3D printing for a softer PLA-based bio-polymer composite in pellet form

• DOI: 10.1016/j.jmrt.2021.08.044
• Publication Date: 2021-08-14T23:19:08Z
• Authors: Sarat Singamneni; Malaya Prasad Behera; Derryn Truong; Marie Joo Le Guen; Elspeth Macrae; Kim Pickering
• Keywords: Fused Deposition Modeling; Fused filament fabrication; Brittleness; Pellet

Fused deposition modelling is the most popular method of 3D printing with a variety polymers, but raw materials are commonly in filament form. Research has demonstrated ability to use pellets for this process, which easier produce than filaments. Apart from savings on pre-processing, approach also combines good attributes both injection moulding and referred as extrusion printing. Direct especially suited thermosensitive which, repeated or excessive heating may lead degeneration. Also, polymers that too soft do not qualify filament-based extrusion. PLA choice fused form often brittle. A softer version composite based PBAT cellulose fibres proposed here Considering lack stiffness filaments, direct pellet evaluated. Regardless form, polymer material system satisfied stringent conditions consolidation dictated by dynamic combination rasterised deposition. Experimental evaluation meso-structural mechanical property analyses indicate new pellet-based be suitable perform well. The novelty process printed samples were actually comparable mechanically moulded counterparts, an extraordinary achievement, considering shortcomings typical additive manufacturing.