Poultry Chicken Feather Derived Biodegradable Multifunctional Additives for Lubricating Formulations

The present paper describes the first successful application of poultry waste chicken feathers in the development of green, biodegradable, and eco-friendly lubricant additives. The additive was synthesized through three step chemical functionalization of chicken feathers. The first step involves the reaction between chicken feather powder (CF) and (3-aminopropyl)trimethoxysilane (APTMS) to synthesis CF-APTMS, the second step involves the synthesis of CF-Schiff base by reacting CF-APTMS with 3,5-ditert-butyl-4-hydroxybenzaldehyde, and in the third step, esterification with lauroyl chloride catalyzed by 4-(dimethylamino)pyridine (DMAP) afforded the final product acylated chicken feather Schiff base. The applicability of this CF derived additive as a biodegradable and ecofriendly lubricating oil additive was investigated by testing the antioxidant, lubricity, and anticorrosion properties in polyol which was taken as a reference base fluid. A rotatary bomb oxidation test (RBOT) was used to evaluate the antioxidant characteristics while a four ball test was employed for the tribological properties. The additive is found to be very effective as an antioxidant and anticorrosive additive, but as an antiwear additive its potential is moderate.