Synthesis of poly(ionic liquid)s brush-grafted carbon dots for high-performance lubricant additives of polyethylene glycol

Antibacterial carbon dots derived from polyethylene glycol/polyethyleneimine with potent anti‐friction performance as water‐based lubrication additives

“…N derived from the CDs is also found to be uniformly distributed on the surface, proving that the CDs participate in the friction process. According to the lubrication mechanism of CDs mentioned in the previous literatures, 17,18,40 the rolling effect and self-mending effect of carbon core are considered to be the main reasons for the efficient performance of CDs as lubricant additive. In addition, considering that PEG and PEI have certain lubricating property and some polymer chains remain on the surface after the synthesis of CDs.…”

“…[5][6][7][8][9][10][11][12][13][14] With the further research in recent years, CDs show surprising potential in the field of water-based lubricant. [15][16][17] As a substitution to the traditional phosphorus-containing and sulfur-containing lubricating additives, CDs show efficient lubricating performance while being more environmental friendly. 15 Recent studies have used CDs as anti-friction and anti-wear additive for polyethylene glycol (PEG) lubricant.…”

“…15,16 After adding a relatively low concentration of CDs, the friction coefficient and wear volume can be effectively reduced compared with pure PEG. [15][16][17][18] Although there have been many studies on CDs in recent years, the specific structure of CDs have not been revealed yet. The core-shell structure is currently a generally accepted theory that under high temperature and high pressure, some precursors will remain on the surface of CDs instead of being carbonized, which allows CDs to retain the properties of the precursor.…”

Tribological performance of various metal-doped carbon dots as water-based lubricant additives and their potential application as additives of poly(ethylene glycol)

“…As the research progresses, the application range of CDs is expanding more widely based on various surface functionalization and doping techniques, e.g., sensors, drug delivery, solar cells, catalysis, and lubricant additives [30][31][32][33][34][35]. The latest application of CDs as high-performance lubricant additives has garnered increasing attention [36][37][38][39][40].…”

Investigation of ionic liquids with and without graphene as lubricant additive for metal/metal and metal/PEEK contacts over a wide temperature range

“…Research to improve tribological behaviour currently aims in several directions. 4 Superlubricity [5][6][7][8][9] to improve energy efficiency, bio-based lubricants 10 and ionic liquids (ILs) as environmentally friendly lubricants derived from renewable biomaterials, 11 diamond like carbon coatings, 12 graphene 13 and recently carbon quantum dots as lubricant additives [14][15][16][17] are among others part of research to improve the sustainability of tribological systems. 18,19 Specialists in the field of environmentally friendly lubricants discuss currently about lubricants, water-based lubricants containing graphene and onion-like carbon, 20 liquid crystals (LCs), 21 ILs [22][23][24][25] and ionic liquid crystals (ILCs).…”