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. 2021 Apr 2;13(7):1133. doi: 10.3390/polym13071133

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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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Self-healing property of the Alg-BA/OEGCG/NaCl conductive hydrogel. (a) Macroscopic self-healing images of Alg-BA/OEGCG hydrogel without NaCl soaking (top), completely blending without NaCl soaking (middle), and soaked in NaCl 1% solution for 1 min (bottom). (b–d) Evaluation of disruption and recovery of storage (G’) and loss (G”) moduli of hydrogels depending on an alternating strain of 0.5% and 1000%. Alg-BA (2%)/OEGCG (b), Alg-BA (2%)/OEGCG/NaCl (1%) (c), and Alg-BA (2%)/OEGCG/NaCl (2%) (d).