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- Title
Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing.
- Authors
Rosales, José María; Cejudo, Cristina; Verano, Lidia; Casas, Lourdes; Mantell, Casimiro; Martínez de la Ossa, Enrique José
- Abstract
Polylactic Acid (PLA) filaments impregnated with ethanolic mango leaves extract (MLE) with pharmacological properties were obtained by supercritical impregnation. The effects of pressure, temperature and amount of extract on the response variables, i.e., swelling, extract loading and bioactivity of the PLA filaments, were determined. The analysis of the filaments biocapacities revealed that impregnated PLA filaments showed 11.07% antidenaturant capacity and 88.13% antioxidant activity, which after a 9-day incubation shifted to 30.10% and 9.90%, respectively. Subsequently, the same tests were conducted on printed samples. Before their incubation, the printed samples showed 79.09% antioxidant activity and no antidenaturant capacity was detected. However, after their incubation, the antioxidant activity went down to only 2.50%, while the antidenaturant capacity raised up to 23.50%. The persistence of the bioactive properties after printing opens the possibility of using the functionalized PLA filaments as the feed for a three-dimensional (3D) printer.
- Subjects
THREE-dimensional printing; FIBERS; POLYLACTIC acid; MANGO; OXIDANT status
- Publication
Polymers (20734360), 2021, Vol 13, Issue 13, p2125
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym13132125