Tribological evaluation of Guerbet Esters as a Lube Base Stock for Environmentally Acceptable Lubricants

摘要

The straight chain fatty alcohols were converted to branch chain alcohols by condensation of two molecules of alcohols. Guerbet alcohols are primary alcohols with beta branching and have lower melting point than their linear counterpart and exhibit better color and oxidation stability. Guerbet alcohols were esterified with monobasic and dibasic acids. The Guerbet esters were analyzed for physical properties and evaluated for tribological performance. It was found that the load carrying capacity of prepared ester increased with increase in carbon chain. Wear scar of the prepared ester decreased with the increase in carbon number of ester molecule. The esters prepared displayed outstanding liquidity as well as high viscosity indices. Oxidation stability as well as acute oral toxicity of synthesized Guerbet Ester was also studied.