RT journal article
T1 Effect of Thermal and Hydrothermal Accelerated Aging on 3D Printed Polylactic Acid
A1 Bergaliyeva, Saltanat
A1 Sales Lérida, David
A1 Delgado González, Francisco Javier
A1 Bolegenova, Saltanat
A1 Molina Rubio, Sergio Ignacio
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 polylactic acid
K1 thermal aging
K1 hydrothermal aging
K1 3D printing
K1 additive manufacturing
K1 fused filament fabrication
K1 recyclability
AB In the new transformation of 'Industry 4.0', additive manufacturing technologies have become one of the fastest developed industries, with polylactic acid (PLA) playing a significant role. However, there is an increasing amount of garbage generated during the printing process and after prototypes or end-of-life parts. Re-3D printing is one way to recycle PLA waste from fused filament fabrication. To do this process successfully, the properties of the waste mixture should be known. Previous studies have found that PLA degrades hydrolytically, but the time at which this process occurs for 3D printed products is not specified. This work aims to establish the baseline of the degradation kinetics of 3D printed PLA products to predict the service time until which these properties are retained. To achieve this, 3D printed specimens were thermally and hydrothermally aged during several time intervals. Thermal and mechanical properties were also determined. This study reveals that tensile strength decreases after 1344 h of hydrothermal ageing, simulating 1.5-2.5 years of real service time. PLA therefore has the same thermo-mechanical properties before reaching 1.5-years of age, so it could be recycled.
PB MDPI
SN 2073-4360
YR 2022
FD 2022-12
LK http://hdl.handle.net/10498/28696
UL http://hdl.handle.net/10498/28696
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 06-nov-2026