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. 2021 Nov 30;13(23):4192. doi: 10.3390/polym13234192

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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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Surface chemistry shown by (A) FTIR absorption spectra and (B) intensity ratios of the selected absorption peaks of PBAT- and TPS-blended films (PBAT/TPS) containing different contents of TiO₂ (1, 2, 3, 4, and 5%). The different letters (a–e) indicate significant difference (p ≤ 0.05) between samples (as different concentrations of TiO₂).