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. 2021 Apr 16;13(8):1310. doi: 10.3390/polym13081310

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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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O₂ absorbed (%) by PE/PA, PE/PA/PB5 and PE/PA/PB13 films after UV radiation for 5, 10 and 20 h (mean ± SD, n = 3). Different superscripts within the same formulation indicate statistically significant different values (p < 0.05).