RT journal article
T1 Manufacture and Characterization of Polylactic Acid Filaments Recycled from Real Waste for 3D Printing
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 recycling; waste
K1 additive manufacturing
K1 fused filament fabrication
K1 thermogravimetry
K1 calorimetry
K1 scanning electron microscopy
K1 tensile strength
AB This paper studies the thermal, morphological, and mechanical properties of 3D-printedpolylactic acid (PLA) blends of virgin and recycled material in the following proportions: 100/0,25/75, 50/50, and 75/25, respectively. Real waste, used as recycled content, was shredded andsorted by size without a washing step. Regular dog-bone specimens were 3D printed from filaments,manufactured in a single screw extruder. Thermogravimetric analysis indicated that adding PLAdebris to raw material did not significantly impact the thermal stability of the 3D-printed samples andshowed that virgin and recycled PLA degraded at almost the same temperature. Differential scanningcalorimetry revealed a significant reduction in crystallinity with increasing recycled content. Scanningelectron microscopy showed a more homogenous structure for specimens from 100% pure PLA, aswell as a more heterogeneous one for PLA blends. The tensile strength of the PLA blends increasedby adding more recycled material, from 44.20   2.18 MPa for primary PLA to 52.61   2.28 MPa forthe blend with the highest secondary PLA content. However, this study suggests that the mechanicalproperties of the reprocessed parts and their basic association are unique compared with those madeup of virgin material.
PB MDPI
SN 2073-4360
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32449
UL http://hdl.handle.net/10498/32449
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026