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. 2022 Oct 25;14(21):4514. doi: 10.3390/polym14214514

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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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TGA curves of polymers obtained at [NCO]₀/[OH]₀ = 1.5 (a) and [NCO]₀/[OH]₀ = 1.88 (b). The measurements were performed under a nitrogen atmosphere, with a heating rate of 2 °C/min.