Influence of the Terpolymer and its Nanocomposite Pour Point Depressants on Lubricating Oil Properties

This work involves the investigation of the effect of structure variables of a new prepared terpolymer and its nanocomposite on the pour point depressant (PPD) and rheological behavior of lube oil. The terpolymer (TP) prepared by a free radical solution polymerization of the three monomers; alkyl acrylate (hexadecyl acrylate), diethyl maleate, and alpha olefin (1-hexadecene), but terpolymer nanocomposite (PNC) was synthesized by emulsion polymerization of the same monomers in presence of nanoclay (nano montmorillonite, NMMT). The entire prepared polymeric additives were characterized by FT-IR, 1HNMR, DLS and GPC. The prepared polymers (TP & PNC) were blended with lube oil and measured the pour point temperatures (PPT), rheological properties and viscosity index (VI) before and after additives in detail. The results are encouraging and showing that, all polymeric additives exhibited a good efficiency as PPD, rheological properties and VII. The nanocomposite additive has a good efficiency more than conventional terpolymer for all tested techniques. The data were showed that, these additives can improve the properties of lube oil and this lube oil can used as engine lubricating oil.