Synthesis of Plant-Based Ester for Metalworking Fluids and Tribological Performance

Authors : Ertuğrul Kaya

Pages : 430-442

Doi:10.29130/dubited.1501022

View : 59 | Download : 34

Publication Date : 2025-01-30

Article Type : Research Paper

Abstract :Lubricants derived from plant-based raw materials offer great potential for the development of environmentally friendly and renewable esters due to their easier and faster biodegradability, reducing dependence on petrochemical raw materials and creating new synthesis processes. The increasing burden of environmental regulations and the depletion of petroleum-derived raw materials have prompted many industries to opt for products based on natural raw materials. Due to these positive effects, vegetable oil-based esters have recently been considered as potential candidates for industrial use. In this context, ester synthesis from cottonseed oil, a natural biodegradable raw material source, was carried out by transesterification with isopropyl alcohol. The structure of the synthesized ester was elucidated by GC-FID and FTIR and important physical parameters such as acid number, saponification number, viscosity and density of the ester were investigated. The synthesized isopropyl cottonseed oil ester was used to formulate a synthetic metalworking fluid at concentrations of 2%, 4% and 6%. The tribological properties of the formulated metalworking fluid were evaluated using the Reichert test and the chip corrosion test. It was found that the addition of 6% isopropyl cottonseed oil ester to the synthetic metalworking fluid exhibited the best tribological properties.
Keywords : Pamuk yağı, Metal işleme sıvısı, Transesterifikasyon, Triboloji.