Synthesis, characterization and application of polyesters from diglycerol and triglycerol as lubricants and additives

IF 1.9 4区农林科学 Q3 CHEMISTRY, APPLIED

Journal of the American Oil Chemists Society Pub Date : 2024-06-04 DOI:10.1002/aocs.12868

Débora Hellen Almeida de Brito, Ana Paula Dantas Schuller, Igor Marques Cavalcante, Natália Rodrigues Castro Rocha, Denise Ramos Moreira, Martin Edmund Maier, César Liberato Petzhold, Nágila Maria Pontes Silva Ricardo

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引用次数: 0

Abstract

Glycerol is produced on a large scale as a byproduct in the biodiesel market. In order to give an application to glycerol, this work uses diglycerol from synthesized polyglycerol and commercial triglycerol in the synthesis of long chain esters obtained from esterification and transesterification reactions with oleic acid, methyl oleate, and epoxidized methyl oleate. Diglycerol tetraoleate (DGMO), epoxidized diglycerol tetraoleate (DGEMO), and triglycerol pentaoleate (TGOA) were synthesized and characterized by ¹H and ¹³C Nuclear Magnetic Resonance (NMR) and infrared (IR) spectroscopy. Polyglycerol esters were evaluated for basic lubrication properties such as density, kinematic viscosity, viscosity index, melting point, and thermo-oxidative stability. The ester that showed best thermo-oxidative stability was DGEMO. In addition, the influence of esters synthesized as additives in a pure paraffinic oil lubricant was evaluated and the TGOA showed greater change in viscosity at 100 and 40°C and in melting point which was increased by 1.56°C.

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来源期刊

Journal of the American Oil Chemists Society 工程技术-食品科技

CiteScore

4.10

自引率

5.00%

发文量

审稿时长

2.4 months

期刊介绍： The Journal of the American Oil Chemists’ Society (JAOCS) is an international peer-reviewed journal that publishes significant original scientific research and technological advances on fats, oils, oilseed proteins, and related materials through original research articles, invited reviews, short communications, and letters to the editor. We seek to publish reports that will significantly advance scientific understanding through hypothesis driven research, innovations, and important new information pertaining to analysis, properties, processing, products, and applications of these food and industrial resources. Breakthroughs in food science and technology, biotechnology (including genomics, biomechanisms, biocatalysis and bioprocessing), and industrial products and applications are particularly appropriate. JAOCS also considers reports on the lipid composition of new, unique, and traditional sources of lipids that definitively address a research hypothesis and advances scientific understanding. However, the genus and species of the source must be verified by appropriate means of classification. In addition, the GPS location of the harvested materials and seed or vegetative samples should be deposited in an accredited germplasm repository. Compositional data suitable for Original Research Articles must embody replicated estimate of tissue constituents, such as oil, protein, carbohydrate, fatty acid, phospholipid, tocopherol, sterol, and carotenoid compositions. Other components unique to the specific plant or animal source may be reported. Furthermore, lipid composition papers should incorporate elements of yeartoyear, environmental, and/ or cultivar variations through use of appropriate statistical analyses.