Bisurfactant‐functionalized TiO2 nanoparticles as additives of the lubricating oil. (16th May 2022)

• Record Type: Journal Article
• Authors: Ma, Hongxia; Wu, Wei; Wang, Zeyun
• Is Part Of: Lubrication science. Volume 34:Number 7(2022)
• Page Start: 441
• Page End: 448
• Publication Date: 2022-05-16
• Subjects: lubricating additives -- surface modification -- TiO2 nanoparticles -- tribological properties.; Tribology -- Periodicals; Lubrication systems -- Research -- Periodicals; Surfaces (Technology) -- Research -- Periodicals; 621.89
• DOI: 10.1002/ls.1600
• Languages: English
• ISSNs: 0954-0075

Abstract

Abstract: In this work, TiO2 nanoparticles modified with octadecylamine and dodecyl mercaptan (DDM/ODA@PDA@TiO2 NPs) are uesd to improve the tribological properties of the white oil. The DDM/ODA@PDA@TiO2 NPs which are simply prepared by mussel inspired chemistry and the Michael addition reaction can be facilely dispersed in the white base oil. Tribological measurements showed that the dispersion of the white oil containing 3 wt% DDM/ODA@PDA@TiO2 NPs displays significant reductions in the friction coefficient and wear scar diameter at room temperature and 75°C. Further XPS investigation shows that the favourable tribological properties of DDM/ODA@PDA@TiO2 NPs are ascribed to the synergistic effect of tribofilm (Fe2 O3, Fe3 O4, FeS2, FeS and FeSO4 ) and TiO2 nanofluids.