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. 2021 May 17;13(10):1610. doi: 10.3390/polym13101610

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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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ATR-FT-IR spectra for PLA with MB and PEG bio-plasticizers (a), and PLA-based plasticized composites containing MB and PEG bio-plasticizers in different ratios, CS-M and vitamin E (b) in the 3200–750 cm⁻¹ spectral range.