Modification of epoxidized methyl esters of sunflower oil fatty acids with some diols

Abstract

It is possible to obtain products with a wide range of useful properties as a result of the modification of epoxidized vegetable oils and their derivatives. The aim of this work was to develop methods for the synthesis of new products by the reaction of epoxidized sunflower oil fatty acid methyl esters (FAME) with dihydric alcohols: ethylene glycol, butanediol-1,4, diethylene glycol, as well as in the study of their structure and properties. Dependences of the structure of the obtained products on the conditions of the process and the type of the modifier have been established. It was shown that carrying out the modification at a higher temperature (100 ° C) leads to the formation of crosslinked products as a result of intermolecular dehydration with the participation of both hydroxyl groups of the diol molecule. In addition to the opening of the oxirane ring, the transesterification process with the participation of the ester fragment is realized. Certain characteristics of the obtained products, including the acid number, saponification number, were determined, and the emulsifying effect was evaluated. In addition, the solidification temperature and pour point were determined for the products obtained. It was found that the products of modification of epoxy derivatives of FAME of sunflower oil obtained at 50 ° C have the greatest emulsifying effect.

Frictional performance of chemically modified cottonseed-based fossil-free biolubricant oil in a sliding tribopair

“…This research demonstrates the high production rate of FAEEs from palm oil, soybean, and rice bran at elevated temperatures up to 200 °C, with a molar ratio of 6:1 and 1wt% catalyst (Unruean et al, 2022). Different synthesis methods were developed for green lubricant products by synthesizing sunflower oil FAME with dihydric alcohols (Ulanova et al, 2022).…”

“…The conversion of triglyceride to esters can be followed or preceded by one or more transesterification reactions to improve production, such as hydrogenation and epoxidation (Cecilia et al, 2020). Different natural oils were used as raw materials to develop sustainable biodiesel and biolubricant as an alternative to fossil fuels (Panchal et al, 2017;Carlucci et al, 2019;Sharma and Sachan, 2019;Djomdi et al, 2020;Encinar et al, 2020;Gul et al, 2020;Ge et al, 2022;Rokni et al, 2022;Shahabuddin et al, 2022;Ulanova et al, 2022;Unruean et al, 2022). The conversion of triglycerides of Vegetable oil into biodiesel is through a transesterification process.…”