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. 2021 Oct 9;13(20):3462. doi: 10.3390/polym13203462

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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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Comp	29a	29b	29c
n	10	12	18
R	H	H	H