Fatty acid amides of plant origin in elastomeric compositions

Abstract

One of the strategic directions of chemical technology eco-modernization is the use of renewable natural raw materials to create ingredients for elastomeric composites. The use of fatty acids amides of sunflower oil, such as monoethanolamide and diethanolamide of sunflower oil fatty acids, and oleic acid amide, has been proposed for the rubber industry; their main characteristics have been determined. The effectiveness of the action of fatty acid amides in sulfur vulcanization system has been studied in unfilled and filled elastomeric composites of a model type based on butadiene--methylstyrene rubber with the presence of the investigated substances at a dosage of 1.5 phr per 100.0 phr of the rubber base. Using the rheometry method, it has been shown that the investigated fatty acid amides significantly activate and deepen the degree of sulfur vulcanization, and their activity in the composition of accelerated sulfur vulcanization activators depends on the structure. Fatty acid diethanolamide with a tertiary nitrogen atom exhibited the maximum activity. A positive effect of fatty acid amides on the gain coefficient, complex dynamic modulus, and mechanical loss tangent of rubber has been established.