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Optimization of Process Parameters for Fabricating Polylactic Acid Filaments Using Design of Experiments Approach
Article

Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing

Chemical Engineering and Food Technology Department, Wine and Agrifood Research Institute (IVAGRO), University of Cadiz, Puerto Real, 11519 Cadiz, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Roberto De Santis
Polymers 2021, 13(13), 2125; https://doi.org/10.3390/polym13132125
Received: 29 May 2021 / Revised: 21 June 2021 / Accepted: 23 June 2021 / Published: 28 June 2021
(This article belongs to the Special Issue Polymers for 3D Printing: Current Advances and Future Perspectives)
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. View Full-Text
Keywords: supercritical; polylactic acid; impregnation; biomedicine; medical device; mangifera indica; 3D printing; additive manufacturing supercritical; polylactic acid; impregnation; biomedicine; medical device; mangifera indica; 3D printing; additive manufacturing
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MDPI and ACS Style

Rosales, J.M.; Cejudo, C.; Verano, L.; Casas, L.; Mantell, C.; Martínez de la Ossa, E.J. Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing. Polymers 2021, 13, 2125. https://doi.org/10.3390/polym13132125

AMA Style

Rosales JM, Cejudo C, Verano L, Casas L, Mantell C, Martínez de la Ossa EJ. Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing. Polymers. 2021; 13(13):2125. https://doi.org/10.3390/polym13132125

Chicago/Turabian Style

Rosales, José M., Cristina Cejudo, Lidia Verano, Lourdes Casas, Casimiro Mantell, and Enrique J. Martínez de la Ossa. 2021. "Supercritical Impregnation of PLA Filaments with Mango Leaf Extract to Manufacture Functionalized Biomedical Devices by 3D Printing" Polymers 13, no. 13: 2125. https://doi.org/10.3390/polym13132125

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