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Open AccessProceedings

Shape-Memory Properties of 3D Printed PLA Structures

by 1 and 1,2,*
1
Virtual Institute of Applied Research on Advanced Materials (VIARAM)
2
Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, 336 19 Bielefeld, Germany
*
Author to whom correspondence should be addressed.
Presented at the First International Conference on “Green” Polymer Materials 2020, 5–25 November 2020; Available online: https://cgpm2020.sciforum.net/.
Proceedings 2021, 69(1), 6; https://doi.org/10.3390/CGPM2020-07198
Published: 4 November 2020
Polylactic acid (PLA) belongs to the few thermoplastic polymers that are derived from renewable resources such as corn starch or sugar cane. PLA is often used in 3D printing by fused deposition modeling (FDM) since it is relatively easy to print, does not show warping, and can be printed without a closed building chamber. On the other hand, PLA has interesting mechanical properties which are influenced by the printing parameters and geometries. Here we present shape-memory properties of PLA cubes with different infill patterns and percentages. We investigate the material response under defined quasi-static load as well as the possibility to restore the original 3D printed shape. The quasi-static flexural properties are linked to the porosity and the infill structure of the samples under investigation, examined optically and by simulations. Our results underline the importance of designing the infill patterns carefully to develop samples with desired mechanical properties.
Keywords: polylactic acid; fused deposition modelling; 3-point bending test; infill parameters; infill density; shape-memory properties polylactic acid; fused deposition modelling; 3-point bending test; infill parameters; infill density; shape-memory properties
MDPI and ACS Style

Ehrmann, G.; Ehrmann, A. Shape-Memory Properties of 3D Printed PLA Structures. Proceedings 2021, 69, 6. https://doi.org/10.3390/CGPM2020-07198

AMA Style

Ehrmann G, Ehrmann A. Shape-Memory Properties of 3D Printed PLA Structures. Proceedings. 2021; 69(1):6. https://doi.org/10.3390/CGPM2020-07198

Chicago/Turabian Style

Ehrmann, Guido; Ehrmann, Andrea. 2021. "Shape-Memory Properties of 3D Printed PLA Structures" Proceedings 69, no. 1: 6. https://doi.org/10.3390/CGPM2020-07198

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