Abstract
Present experimental study investigates the stability evaluation of TiO2/canola oil nanolubricant using Triton X-100 as a surfactant. In order to examine the better dispersion stability of three different mass ratios of TiO2: Triton X-100 (i.e. 1:2, 1:3 and 1:4) were added in canola oil. Zeta potential method was used to examine the stability of prepared samples. Furthermore, the influence of particles loading on rheological behaviour of TiO2/canola oil nanolubricant has also been investigated for the temperature of 40 °C and 100 °C at a constant shear rate (500 s−1). The results revealed that the highest stability was observed for TiO2: Triton X-100 mass ratio of 1:3. Viscosity of TiO2/canola oil nanolubricant was increased with the increase of particle loading while it decreased with temperature. Experimental viscosity results was also correlated with the available viscosity models and large deviation was to be observed. Hence, a regression model has been proposed with a function of particle concentration and temperature.
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