Add time:07/12/2019         Source:sciencedirect.com

Monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), methylaminoethanol (MAE), piperidine (PP), pyridine (Pr), morpholine (Mr), diethylamine (DEtA), triethylamine (TEtA), ethylenediamine (EDA), diethylenetriamine (DETA) and triethylenetetramine (TETA) salts of coconut oil acid fraction have been synthesized. Physico-chemical indices of these salts have been determined and their surface-active parameters have been measured, including critical micelle concentration (CMC), effectiveness of surface tension reduction (πCMC), surface excess concentration (Γmax), area per molecule at the interface (Amin), changes of Gibbs free energies of adsorption (ΔGad) and micellization (ΔGmic). Character of variation of the obtained surface-active salts physico-chemical indices as well as colloidal–chemical parameters in dependence of nature of the hydrophilic group of these salts has been found. Petroleum-collecting and petroleum-dispersing capacities of the synthesized salts on the surface of water of varying mineralization degree have been studied.

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