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. 2022 Feb 1;11(3):426. doi: 10.3390/foods11030426

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© 2022 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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Field emission electron microscopy (FESEM) micrographs of the polylactide (PLA) (a,d), M1 (b,e), and M2 (c,f) multilayer films in their cross-sections (left) and top views (right).