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. 2021 Feb 12;13(4):538. doi: 10.3390/polym13040538

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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 (http://creativecommons.org/licenses/by/4.0/).

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Electron spin resonance results ((a) unpaired electrons and (b) ESR peak width) for medium processing channel (MPC) type of carbon black (Spheron 6 from Cabot; NSA = 111.5 m²/g [64]). Results replotted from Kraus et al. [59,60].