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Article

Shape-Memory Properties of 3D Printed Cubes from Diverse PLA Materials with Different Post-Treatments

1
Virtual Institute of Applied Research on Advanced Materials (VIARAM)
2
Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, 33619 Bielefeld, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Jeng-Ywan Jeng and Ajeet Kumar
Received: 29 August 2021 / Revised: 16 September 2021 / Accepted: 26 September 2021 / Published: 29 September 2021
(This article belongs to the Special Issue 3D Printing and Additive Manufacturing: Principles and Applications)
Poly(lactic acid) (PLA) belongs to the 3D printable materials which show shape-memory properties, i.e., which can recover their original shape after a deformation if they are heated above the glass transition temperature. This makes PLA quite an interesting material for diverse applications, such as bumpers, safety equipment for sports, etc. After investigating the influence of the infill design and degree, as well as the pressure orientation on the recovery properties of 3D printed PLA cubes in previous studies, here we report on differences between different PLA materials as well as on the impact of post-treatments after 3D printing by solvents or by heat. Our results show not only large differences between materials from different producers, but also a material-dependent impact of the post treatments. Generally, it is possible to tailor the mechanical and recovery properties of 3D printed PLA parts by choosing the proper material in combination with a chemical or temperature post-treatment. View Full-Text
Keywords: polylactic acid (PLA); shape-memory properties; fused deposition modeling (FDM); three-point bending test; post-treatment; solvent; heat polylactic acid (PLA); shape-memory properties; fused deposition modeling (FDM); three-point bending test; post-treatment; solvent; heat
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MDPI and ACS Style

Ehrmann, G.; Brockhagen, B.; Ehrmann, A. Shape-Memory Properties of 3D Printed Cubes from Diverse PLA Materials with Different Post-Treatments. Technologies 2021, 9, 71. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9040071

AMA Style

Ehrmann G, Brockhagen B, Ehrmann A. Shape-Memory Properties of 3D Printed Cubes from Diverse PLA Materials with Different Post-Treatments. Technologies. 2021; 9(4):71. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9040071

Chicago/Turabian Style

Ehrmann, Guido, Bennet Brockhagen, and Andrea Ehrmann. 2021. "Shape-Memory Properties of 3D Printed Cubes from Diverse PLA Materials with Different Post-Treatments" Technologies 9, no. 4: 71. https://0-doi-org.brum.beds.ac.uk/10.3390/technologies9040071

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