Nanostructural Characterization of Oleyl Acid Phosphate in Poly-α-olefin Using Small-angle X-ray Scattering

The nanostructure of oleyl acid phosphate (OLAP) in lubricant, which is an essential factor for understanding lubrication properties, was investigated using small-angle X-ray scattering (SAXS). SAXS profiles were observed for OLAP with concentrations of 1, 3, 5, and 10 mass % in poly-α-olefin (PAO). The SAXS results demonstrated that OLAP forms reverse-micellar-like aggregates in PAO. This nanostructural information from SAXS will drive further development of advanced lubricants. Small-angle X-ray scattering (SAXS) was used to measure the nanostructure of oleyl acid phosphate (OLAP) in lubricant, which is essential for understanding lubrication properties. The SAXS results show that OLAP forms reverse-micellar-like aggregates in poly-α-olefin. This nanostructural information from SAXS will drive further development of advanced lubricants.