TY - JOUR
T1 - Amorphous biomineral-reinforced hydrogels with dramatically enhanced toughness for strain sensing
AU - Liu, Jia-hua
AU - Mao, Zhengyi
AU - Chen, Yuhan
AU - Long, Yunchen
AU - Wu, Haikun
AU - Shen, Junda
AU - Zhang, Rong
AU - Yeung, Oscar W.H.
AU - Zhou, Binbin
AU - Zhi, Chunyi
AU - Lu, Jian
AU - Li, Yang Yang
PY - 2023/7/15
Y1 - 2023/7/15
N2 - Ionic conductive hydrogels are promising candidates for flexible wearable strain sensors and artificial skin. However, achieving high mechanical and sensing performance concurrently remains challenging. Herein, a novel biomineral-reinforced hydrogel composed of polyacrylamide (PAM) and highly stable amorphous calcium carbonate (ACC) is reported. Benefiting from the dual ionic doping strategy (Mg2+ and PO43−), ACC nanoparticles in hybrid hydrogels show a super stable amorphous nature. The resulting mineral hydrogel displays a high stretchability (>1150% strain), a dramatically enhanced fracture toughness (9.57±1.28 vs. 0.91±0.12 kJ m−2), and a desirable linear strain sensitivity. Moreover, the novel mineral hydrogel exhibits high biocompatibility and flame retardance, making it an appealing candidate for wearable device applications. © 2023 Elsevier B.V.
AB - Ionic conductive hydrogels are promising candidates for flexible wearable strain sensors and artificial skin. However, achieving high mechanical and sensing performance concurrently remains challenging. Herein, a novel biomineral-reinforced hydrogel composed of polyacrylamide (PAM) and highly stable amorphous calcium carbonate (ACC) is reported. Benefiting from the dual ionic doping strategy (Mg2+ and PO43−), ACC nanoparticles in hybrid hydrogels show a super stable amorphous nature. The resulting mineral hydrogel displays a high stretchability (>1150% strain), a dramatically enhanced fracture toughness (9.57±1.28 vs. 0.91±0.12 kJ m−2), and a desirable linear strain sensitivity. Moreover, the novel mineral hydrogel exhibits high biocompatibility and flame retardance, making it an appealing candidate for wearable device applications. © 2023 Elsevier B.V.
KW - Amorphous calcium carbonate
KW - Mechanical performance
KW - Mineral hydrogels
KW - Strain sensors
UR - http://www.scopus.com/inward/record.url?scp=85160575596&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85160575596&origin=recordpage
U2 - 10.1016/j.cej.2023.143735
DO - 10.1016/j.cej.2023.143735
M3 - RGC 21 - Publication in refereed journal
SN - 1385-8947
VL - 468
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 143735
ER -