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Molecular movements of trehalose inside a single network enabling a rapidly-recoverable tough hydrogel 被引量:2
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作者 Xiaowen Huang Jimin Fu +7 位作者 huiyan tan Yan Miu Mengda Xu Qiuhua Zhao Yujie Xie Shengtong Sun Haimin Yao Lidong Zhang 《International Journal of Smart and Nano Materials》 SCIE EI 2022年第4期575-596,共22页
It remains a challenge to achieve rapidly recoverable hydrogels by molecular hydrogen-bonding interaction because of its slow inter-action kinetics.This work for the first time reports a trehalose(Tre)-based molecular... It remains a challenge to achieve rapidly recoverable hydrogels by molecular hydrogen-bonding interaction because of its slow inter-action 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 hydrogenbonding 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),respec-tively,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. 展开更多
关键词 molecular motility highly recoverable tough hydrogels puncture resistance molecular dynamics simulation
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