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. 2019 Jul 31;11(8):1280. doi: 10.3390/polym11081280

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© 2019 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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Continuous normalized stress relaxation ( $R_{c})$ versus the corrected $C S (%)$ after 30 min and $C S (%)$ after tempering for: (a) EPDM; (b) HNBR.