Development of a custom commingled flax/PLA wrapped yarn for additive manufacturing of long-fibre biocomposites
Year: 2025
Type: article
Abstract: Plant fibres are promising reinforcements for bio-composites in additive manufacturing, but their use as long fibres remains limited, often reduced to short particles that underuse their potential. This study presents a customised yarn design that not only maintains fibre alignment parallel to the yarn axis but also ensures core resin impregnation. Commingling and wrap spinning techniques were used to produce four flax/PLA yarns with varying compositions. The manufacturing process and printing of unidirectional composite specimens are detailed. Tomography revealed up to 3.3 times lower intra-yarn porosity thanks to commingling, and tensile tests showed a modulus increase by a factor of 2.1 compared to similar previous works using conventional twisted yarns. These results pave the way for broader use of long flax fibres in 3D printing.
Source: Materials & Design
Authors: Delphine Quereilhac, Thomas Caillault, Svetlana Terekhina, Mahadev Bar, Guillaume Morel, Marina Fazzini, Marwa Abida, Emmanuel De Luycker, Pierre Ouagne
Institutions: École Nationale d'Ingénieurs de Tarbes, Laboratoire Génie de Production, Université de Technologie Tarbes Occitanie Pyrénées, Arts et Métiers, Laboratoire Angevin de Mécanique, Procédés et InnovAtion, Centre National de la Recherche Scientifique, Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux, Université de Lorraine
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,650
OpenAlex ID: W4413919013