Skip to Main content Skip to Navigation
Conference papers

3D printing of PLA and PMMA multilayered model polymers: an innovative approach for a better-controlled pellet multi-extrusion process

Abstract : The present work deals with the 3D printing of multimaterials based on PLA/PMMA multilayers directly obtained from pellets. This polymer pair was chosen for their miscibility at the melt state and synergistic properties (i.e., to improve and weather tune the temperature resistance, transparency and thermomechanical properties of their PLA-based materials). Thus, 3D-printed parts with repeating PMMA/PLA/PMMA layers in the Z building direction were successfully prepared in different numbers but maintaining the same composition. The main objective was to better understand the interface/interphase properties developed during this innovative processing. First, further physicochemical and dynamic thermomechanical characterizations were performed. Second, the effects of multi-extrusion 3D printing processing parameters on the thermal stability of PLA, PMMA and their printed specimens were analyzed by GPC. Then, the structuralrheological and mechanical properties of the multilayered systems were investigated in comparison to their equivalent blend. The effects of flow kinematics during extrusion as well as printing chamber temperature (PCT) and infill density (ID) were specifically studied and rationalized. The triggered interfaces were characterized by SEM and subjected to flexural and short-beam three-point bending experiments that proved their dramatic influence on the final mechanical properties. The ultimate aim of this study is to enable successful control of the interfaces/interphases obtained in these 3D-printed PLA/PMMA systems in comparison to other forming processes.
Document type :
Conference papers
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03205024
Contributor : Mohamed Yousfi <>
Submitted on : Monday, April 26, 2021 - 11:54:40 AM
Last modification on : Wednesday, April 28, 2021 - 3:24:52 AM
Long-term archiving on: : Tuesday, July 27, 2021 - 6:04:34 PM

File

Yousfi et al_Full paper Esafor...
Publisher files allowed on an open archive

Identifiers

Citation

Mohamed Yousfi, Ahmed Belhadj, Khalid Lamnawar, Abderrahim Maazouz. 3D printing of PLA and PMMA multilayered model polymers: an innovative approach for a better-controlled pellet multi-extrusion process. ESAFORM 2021, Apr 2021, En ligne, France. ⟨10.25518/esaform21.1024⟩. ⟨hal-03205024⟩

Share

Metrics

Record views

29

Files downloads

34