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Dynamic mussel-inspired chitin nanocomposite hydrogels for wearable strain sensors

Heidarian, Pejman, Kouzani, Abbas Z., Kaynak, Akif, Zolfagharian, Ali and Yousefi, Hossein 2020, Dynamic mussel-inspired chitin nanocomposite hydrogels for wearable strain sensors, Polymers, vol. 12, no. 6, pp. 1-15, doi: 10.3390/polym12061416.

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Title Dynamic mussel-inspired chitin nanocomposite hydrogels for wearable strain sensors
Author(s) Heidarian, Pejman
Kouzani, Abbas Z.ORCID iD for Kouzani, Abbas Z. orcid.org/0000-0002-6292-1214
Kaynak, AkifORCID iD for Kaynak, Akif orcid.org/0000-0002-6679-657X
Zolfagharian, Ali
Yousefi, Hossein
Journal name Polymers
Volume number 12
Issue number 6
Start page 1
End page 15
Total pages 15
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2020
ISSN 2073-4360
2073-4360
Keyword(s) chitin nanofibers
dynamic hydrogels
self-healing
self-recovery
starch
tannic acid
Summary It is an ongoing challenge to fabricate an electroconductive and tough hydrogel with autonomous self-healing and self-recovery (SELF) for wearable strain sensors. Current electroconductive hydrogels often show a trade-off between static crosslinks for mechanical strength and dynamic crosslinks for SELF properties. In this work, a facile procedure was developed to synthesize a dynamic electroconductive hydrogel with excellent SELF and mechanical properties from starch/polyacrylic acid (St/PAA) by simply loading ferric ions (Fe3+) and tannic acid-coated chitin nanofibers (TA-ChNFs) into the hydrogel network. Based on our findings, the highest toughness was observed for the 1 wt.% TA-ChNF-reinforced hydrogel (1.43 MJ/m3), which is 10.5-fold higher than the unreinforced counterpart. Moreover, the 1 wt.% TA-ChNF-reinforced hydrogel showed the highest resistance against crack propagation and a 96.5% healing efficiency after 40 min. Therefore, it was chosen as the optimized hydrogel to pursue the remaining experiments. Due to its unique SELF performance, network stability, superior mechanical, and self-adhesiveness properties, this hydrogel demonstrates potential for applications in self-wearable strain sensors.
Language eng
DOI 10.3390/polym12061416
Indigenous content off
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30139706

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.