Micellization and adsorption of anionic/nonionic polymeric surfactants for metal work fluid at different interfaces

The metal working fluid industry accounts for approximately 5 per cent of the total world market for lubricant. Cutting fluids are formulated to fulfil one or more different functions. It is becoming increasingly apparent that to provide additions friendly for environment and low costs. This paper studies high performance mixture of anionic/nonionic polymeric surfactants as an additive for metal working fluid, thus the mixture has poly functions such as anticorrosion and emulsifier. The surface tensions of aqueous solutions of anionic/nonionic mixtures were measured as a function of nonionic concentration at 40°C with constant anionic concentration. The surface excesses concentrations, mole fractions, and interaction parameters of binary polymeric mixtures were calculated. Moreover, the critical micelle concentration and adsorption of ANO/ETH mixture on solutions and steel surface were determined. These parameters confirm the synergistic action of ANO/ETH polymeric surfactants for micellization and adsorption at different interfaces.