AUTHOR=Lukosek Marek , Emmons-Burzyńska Magdalena , Alejski Krzysztof , Szwach Iwona TITLE=Physicochemical Characterization of Ethoxylation Products of Fatty Acid Esters JOURNAL=Frontiers in Chemical Engineering VOLUME=3 YEAR=2021 URL=https://www.frontiersin.org/journals/chemical-engineering/articles/10.3389/fceng.2021.617701 DOI=10.3389/fceng.2021.617701 ISSN=2673-2718 ABSTRACT=

The processes of direct ethoxylation of methyl and ethyl esters of unsaturated fatty acids have been described. Two different types of catalysts were employed in those tests: calcium-based catalyst and aluminum-magnesium-based catalyst. Compositions of the synthesized oxyethylates were analyzed with the use of the GC/FID, GC/MS, GPC, and HPLC, HPLC/MS, MALDI methods. Comparative evaluation of the obtained products for both types of catalysts was run in terms of reaction by-products. Biodegradation tests of the oxyethylated products were carried out according to OECD guidelines and physical and chemical properties of oxyethylates were specified which affects the directions of their applications.