Thermal cycling, microstructure and tensile performance of PLA-PHA polymer printed using fused deposition modelling technique - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue (Article De Synthèse) Rapid Prototyping Journal Année : 2020

Thermal cycling, microstructure and tensile performance of PLA-PHA polymer printed using fused deposition modelling technique

Résumé

Purpose This paper aims to investigate the effect of printing temperature on the thermal and the mechanical behaviour of polylactic acid (PLA)-polyhydroxyalkanoate (PHA) blend printed using fused deposition modelling (FDM). Design/methodology/Approach Because of the use of an infra-red camera, thermal cycling during the laying down is quantified. In addition, X-ray micro-tomography is considered to reveal the microstructural arrangement within the three-dimensional printed material. Tensile loading conditions are used to derive Young's modulus, tensile strength and fracture toughness, and relate these to the printing temperature. Finite element computation based on three-dimensional microstructure information is used to predict the role of defects on the tensile performance. Findings The results show a remarkable cohesive structure of PLA-PHA, particularly at 240 degrees C. This cohesive structure is explained by the ability to ensure heat accumulation during laying down as evidenced by the nature of thermal cycling. The printing temperature is found to be a key factor for tuning the ductility of the printed PLA-PHA allowing full restoration of tensile strength at high printing temperature. Originality/value This study reports new results related to the thermo-mechanical behaviour of PLA-PHA that did not receive much attention in three-dimensional printing despite its potential as a candidate for pharmacological and medical applications. This study concludes by a wide range of possible printing temperatures for PLA-PHA and a remarkable low porosity generated by FDM.
Fichier non déposé

Dates et versions

hal-02895025 , version 1 (09-07-2020)

Identifiants

Citer

Sofiane Guessasma, Sofiane Belhabib, Hedi Nouri. Thermal cycling, microstructure and tensile performance of PLA-PHA polymer printed using fused deposition modelling technique. Rapid Prototyping Journal, 2020, 26 (1), pp.122-133. ⟨10.1108/RPJ-06-2019-0151⟩. ⟨hal-02895025⟩
34 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More