CO2 insertion reactions on terminal epoxides (styrene oxide, 1,2-epoxyhexane and butyl glycidyl ether) were performed in a binary homogeneous mixture comprising NaBr as the nucleophilic catalyst diethylene glycol (DEG) both solvent activator (cation coordinating agent). The reaction protocol was initially studied under batch conditions either autoclaves glass reactors: quantitative formation of...

The paper presents results of rheological experiments on viscosity under anisotropic pressure and in electric field of diethylene glycol-based MgAl2O4 nanofluids. Nanofluids have been prepared in a two-step method. The dynamic viscosity of nanofluids with various mass concentrations of nanoparticles was measured in the range of shear rates from 10 s -1 to 1,000 s -1 in constant temperature unde...

Abstract—The aim of this work was to investigate the potential of soil microorganisms and the burhead plant, as well as the combination of soil microorganisms and plants to remediate monoethylene glycol (MEG), diethylene glycol (DEG), and triethylene glycol (TEG) in synthetic wastewater. The result showed that a system containing both burhead plant and soil microorganisms had the highest effici...

We studied the thermal diffusion behavior of hexaethylene glycol monododecyl ether (C12E6) in water by means of thermal diffusion forced Rayleigh scattering (TDFRS) and determined Soret coefficients, thermal diffusion coefficients, and diffusion constants at different temperatures and concentrations. At low surfactant concentrations, the measured Soret coefficient is positive, which implies tha...

A new methacrylate monomer with two propylene glycol groups on the side chain, di(propylene glycol) methyl ether (diPGMA), was synthesised and homo- co-polymerised for first time.

OBJECTIVES To evaluate exposure to mixed solvents containing ethylene glycol monoethyl ether acetate (EGEEA) in shipyard painters, to determine if EGEEA is toxic to the bone marrow. METHODS An industrial hygiene survey was performed to identify exposure to EGEEA of two groups of shipyard painters, a low exposure group (n = 30) and a high exposure group (n = 27). Urinary ethoxyacetic acid and ...

A method developed for the screening of diethylene glycol (DEG) in toothpaste was released by the FDA in 2007. This method could not only quantify the DEG but also confirm if any potential interfering peak is present. However, disadvantages of this method such as intermittent shortages of the key reagent acetonitrile and the shorter than expected column-life issues have prompted a search for al...