Abstract
Because the petroleum based products have a negative impact on the environment,is necessary to create and use eco-friendly lubricants. Vegetable oils are part of this category because they are a renewable natural resource, environmental safety, and show lubricating characteristics. By mixing the castor oil with two synthetic diesters (isodecyl and 2-[(p-nonyl)phenoxy]ethyl adipate respectively, isotridecyl and 2-[(p-nonyl)phenoxy]ethyl adipate) were obtained two series of new lubricants to which the physico-chemical and rheological characteristics were studied. The lubricants were also characterized using the differential scanning calorimetry (DSC) and thermal gravimetric (TG) analyses. The obtained mixtures present superior properties to mineral oils and can be used as lubricants.
Keywords: environmentally lubricants; lubricating properties; vegetable oils