Production and Emulsifying Effect of Esters on The Basis of Polyglycerol and Еpoxidized Derivatives of Sunflower and Soybean Oil

Abstract

Oligo and polyesters of polyglycerol and polyricinoleic acid are widely used as emulsifiers in various industries. New promising emulsifiers for oil-water systems were obtained based on the condensation of glycerol and its oligomers with epoxidized derivatives of vegetable oils. The type of the resulting emulsion was studied. The influence of the composition of the emulsion and the hydrophilic-lipophilic balance (HLB) of the emulsifier on the type of the resulting emulsions was investigated. It was shown that the synthesized emulsifiers significantly increase the viscosity of the emulsion. Complex structural and functional spectral analysis of synthesized substances showed that the main reactions leading to the formation of the desired products were the opening of epoxide cycles, the transesterification of esters, and the condensation of fatty-acid derivatives. This new combination of renewable raw materials is of undoubted interest for deeper chemical processing of vegetable oils. KeywordsEpoxidized vegetable oils Á Emulsifiers Á Polyglycerol Á Polyricinoleate Á Renewable raw materials J Am Oil Chem Soc (2018) 95: 1561-1574.

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

“…Evaluation of emulsification has been carried out on visual inspection of spontaneous demulsification in a tall reservoir after emulsionizing was finished [18][19]23]. The amount of internal phase was detected at regular intervals.…”

“…Previously, the processes of modification of epoxidized derivatives of fatty acids of sunflower and soybean oils with glycerin and polyglycerol were studied. A wide range of new emulsifiers has been obtained [18][19]. The aim of this work was to study the processes of modification of epoxidized derivatives of FAME of sunflower oil under the action of ethylene glycol, diethylene glycol and butanediol-1,4, as well as to study the structure and properties of the esters obtained.…”

Glycerol polymerization degree effect on the emulsifying properties of polyglycerol esters

“…Emulsification properties of synthesized polyglycerol‐esters were evaluated in solutions of 40/60 emulsifier solution/oil ratio (WOR). Visual inspection was applied to determined emulsion stability using the half‐life period concept (time at which 50% of the dispersed phase separates) 23 …”

“…Visual inspection was applied to determined emulsion stability using the half-life period concept (time at which 50% of the dispersed phase separates). 23 Droplet size and size distributions of diluted emulsions were measured using a Laser Light Scattering equipment (Litesizer™ 500). Surface tension of aqueous F I G U R E 1 Schematic representation of polyglycerol ester synthesis polymer solutions was determined as a function of polymer concentration using the Pendant-Drop Method on a Drop Shape Analyzer (DSA25, Kruss, Germany).…”

Cost‐effective synthesis of polyricinoleate: Investigation of coating characteristics, in vitro degradation, and antibacterial activity

“…Polysaccharides (such as cellulose and starch), wood, and proteins are commonly used renewable raw materials, but vegetable oils (VOs) are the most promising ones . For many years, they have found application in various fields such as components of paints, coatings, lubricants, or emulsifiers and recently have attracted attention as alternative material for polymer synthesis . In the literature, there are many examples of modified and nonmodified VOs or their fatty acids used as starting materials for preparation of numerous polymers.…”