Mechanical properties and dynamic response of 3D printed parts in PLA/P(3HB)(4HB) blends

Mechanical properties and dynamic response of 3D printed parts in PLA/P(3HB)(4HB) blends

Daniele Almonti, Clizia Aversa, Alessandra Piselli, Massimiliano Barletta

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Abstract. Oil-based plastics can meet several technical requirements in different industrial applications at a reasonable cost, but they can cause high environmental impact. Bioderived polyesters like PLA and PHAs, are, instead, eco-friendly alternatives to reduce the environmental burden caused by conventional plastics. In this respect, dynamic response and mechanical properties of 3D printed parts made in (PLA)/Poly-3-hydroxybuutyrate-4-hydroxybutyrate(P(3HB)(4HB)) were investigated. The blends were achieved by extrusion compounding of different amount of P(3HB)(4HB) (0%, 10%, 20% and 30%) in PLA. The resulting compounds were extruded to achieve customized self-made filaments, which were reprocessed by Fused Filament Fabrication (FFF) to get the final parts. Hence, the 3D printed parts were tested to evaluate their performance, all of them showing good compromise between mechanical strength and flexibility as well as valuable dynamic response, with high potential in many fields. In particular, it has been observed that the addition of 10% of P(3HB)(4HB) is the most performing solution because it allows to obtain a 50% increase relative to the Young’s Modulus.

Polymers, Material Extrusion, 3D Printing

Published online 9/5/2023, 9 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Daniele Almonti, Clizia Aversa, Alessandra Piselli, Massimiliano Barletta, Mechanical properties and dynamic response of 3D printed parts in PLA/P(3HB)(4HB) blends, Materials Research Proceedings, Vol. 35, pp 206-215, 2023


The article was published as article 25 of the book Italian Manufacturing Association Conference

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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