TY - JOUR
T1 - Molecular movements of trehalose inside a single network enabling a rapidly-recoverable tough hydrogel
AU - Huang, Xiaowen
AU - Fu, Jimin
AU - Tan, Huiyan
AU - Miu, Yan
AU - Xu, Mengda
AU - Zhao, Qiuhua
AU - Xie, Yujie
AU - Sun, Shengtong
AU - Yao, Haimin
AU - Zhang, Lidong
N1 - Funding Information:
The authors are grateful to the National Natural Science Foundation of China (Grant No. 51873064, 51603068, 11772283), and the Natural Science Foundation of Shanghai (Grant No. 20ZR1418200; 17ZR1440600) for financial support.
Publisher Copyright:
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2022/8
Y1 - 2022/8
N2 - It remains a challenge to achieve rapidly recoverable hydrogels by molecular hydrogen-bonding interaction because of its slow interaction kinetics. This work for the first time reports a trehalose (Tre)-based molecular movement mechanism inside a single network of polyacrylamide (PAM) that accelerates the kinetics of hydrogen-bonding interaction, and thereby endows the hydrogel with high toughness and rapid shape and mechanical recoverability. The resultant PAM@Tre hydrogel is capable of full shape recovery after 10,000 loading/unloading cycles at a strain of 500%. Even after being stretched at a strain of 2500%, it can recover to its original shape within 10 seconds. Moreover, the molecular movement of trehalose also endows the PAM@Tre hydrogel with fracture energy and toughness as high as ~9000 J m–2 and ~1600 kJ m–3, respectively, leading to strong resistance to both static and dynamic piercing. The PAM@Tre hydrogel is thus believed to have enormous potentials in protection devices, bionic skin, soft actuator, and stretchable electronics.
AB - It remains a challenge to achieve rapidly recoverable hydrogels by molecular hydrogen-bonding interaction because of its slow interaction kinetics. This work for the first time reports a trehalose (Tre)-based molecular movement mechanism inside a single network of polyacrylamide (PAM) that accelerates the kinetics of hydrogen-bonding interaction, and thereby endows the hydrogel with high toughness and rapid shape and mechanical recoverability. The resultant PAM@Tre hydrogel is capable of full shape recovery after 10,000 loading/unloading cycles at a strain of 500%. Even after being stretched at a strain of 2500%, it can recover to its original shape within 10 seconds. Moreover, the molecular movement of trehalose also endows the PAM@Tre hydrogel with fracture energy and toughness as high as ~9000 J m–2 and ~1600 kJ m–3, respectively, leading to strong resistance to both static and dynamic piercing. The PAM@Tre hydrogel is thus believed to have enormous potentials in protection devices, bionic skin, soft actuator, and stretchable electronics.
KW - highly recoverable tough hydrogels
KW - molecular dynamics simulation
KW - molecular motility
KW - puncture resistance
UR - http://www.scopus.com/inward/record.url?scp=85137049073&partnerID=8YFLogxK
U2 - 10.1080/19475411.2022.2116735
DO - 10.1080/19475411.2022.2116735
M3 - Journal article
AN - SCOPUS:85137049073
SN - 1947-5411
VL - 13
SP - 575
EP - 596
JO - International Journal of Smart and Nano Materials
JF - International Journal of Smart and Nano Materials
IS - 4
ER -