TY - JOUR
T1 - Zwitterionic microgel-functionalized gallium-based liquid-metal nanodroplets as aqueous lubricant additives
AU - He, Baoluo
AU - Wang, Peng
AU - Lu, Qi
AU - Du, Yixuan
AU - Liu, Shujuan
AU - Ye, Qian
AU - Zhou, Feng
AU - Liu, Weimin
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/1
Y1 - 2023/1
N2 - Herein, a bioinspired molecule-dopamine n-butenylamide-was self-assembled on Gallium-based liquid metal (GLM) nanodroplets to introduce vinyl group, and the zwitterionic poly (2-methylacryloxyethyl phosphocholine) (PMPC) was grafted onto GLM nanodroplets via surface-initiated free radical polymerization to obtain hybrid PMPC-GLM microgel. The as-prepared PMPC-GLM microgel has good dispersion stability in aqueous solution (chemical stability > 2 months), and shows excellent antibacterial properties due to the hydration of PMPC and antibacterial effect of Ga3+. Moreover, the hydration layer endows PMPC-GLM microgel with satisfactory tribological properties as an aqueous lubricant additive, with the COF and wear rate reduced by 65% and 62%. In addition to hydration lubrication, the improved tribological performance is attributed to the formation of protective film on the worn surface.
AB - Herein, a bioinspired molecule-dopamine n-butenylamide-was self-assembled on Gallium-based liquid metal (GLM) nanodroplets to introduce vinyl group, and the zwitterionic poly (2-methylacryloxyethyl phosphocholine) (PMPC) was grafted onto GLM nanodroplets via surface-initiated free radical polymerization to obtain hybrid PMPC-GLM microgel. The as-prepared PMPC-GLM microgel has good dispersion stability in aqueous solution (chemical stability > 2 months), and shows excellent antibacterial properties due to the hydration of PMPC and antibacterial effect of Ga3+. Moreover, the hydration layer endows PMPC-GLM microgel with satisfactory tribological properties as an aqueous lubricant additive, with the COF and wear rate reduced by 65% and 62%. In addition to hydration lubrication, the improved tribological performance is attributed to the formation of protective film on the worn surface.
KW - Gallium-based liquid-metal
KW - Surface modification
KW - Water-based lubricant additives
KW - Zwitterionic microgel
UR - http://www.scopus.com/inward/record.url?scp=85139009561&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2022.107952
DO - 10.1016/j.triboint.2022.107952
M3 - 文章
AN - SCOPUS:85139009561
SN - 0301-679X
VL - 177
JO - Tribology International
JF - Tribology International
M1 - 107952
ER -