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. 2021 Dec 1;13(23):4216. doi: 10.3390/polym13234216

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Digital images of char residues for (a) PLA, (b) rGO/PLA, (c) PM/PLA, and (d) PMrG-3/PLA after cone calorimeter test; SEM images of char residues for (e) PLA, (f) rGO/PLA, (g) PM/PLA, and (h) PMrG-3/PLA after cone calorimeter test.