A Star-Shaped Anionic Surfactant: Synthesis, Alkalinity Resistance, Interfacial Tension and Emulsification Properties at the Crude Oil–Water Interface

A Star-Shaped Anionic Surfactant: Synthesis, Alkalinity Resistance, Interfacial Tension and... In this research, a star-shaped surfactant was synthesized through the chlorination reaction, alkylation reaction and sulfonation reaction of triethanolamine, which is composed of three hydrophobic chains and three sulfonate hydrophilic groups. The critical micelle concentration (CMC) of the surfactant was measured by the surface tension method, and the results showed that it had high surface activity with CMC of 5.53 × 10−5 mol/L. The surfactant was superior in surface active properties to the reference surfactants SDBS and DADS-C12. The interfacial tension (IFT) of the studied crude oil–water system (surfactant concentration 0.1 g/L, NaOH concentration 0.5 g/L, and experimental temperature 50 °C) dropped to 1.1 × 10−4 mN/m, which can fulfil the requirement of surfactants for oil displacement. An aqueous solution of the surfactant and crude oil was emulsified by shaking, which formed a highly stable oil-in-water (O/W) emulsion with particle size of 5–20 μm. The oil displacement effect was almost 12%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Surfactants and Detergents Springer Journals

A Star-Shaped Anionic Surfactant: Synthesis, Alkalinity Resistance, Interfacial Tension and Emulsification Properties at the Crude Oil–Water Interface

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Publisher
Springer Journals
Copyright
Copyright © 2017 by AOCS
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution; Surfaces and Interfaces, Thin Films; Polymer Sciences; Physical Chemistry
ISSN
1097-3958
eISSN
1558-9293
D.O.I.
10.1007/s11743-017-1988-y
Publisher site
See Article on Publisher Site

Abstract

In this research, a star-shaped surfactant was synthesized through the chlorination reaction, alkylation reaction and sulfonation reaction of triethanolamine, which is composed of three hydrophobic chains and three sulfonate hydrophilic groups. The critical micelle concentration (CMC) of the surfactant was measured by the surface tension method, and the results showed that it had high surface activity with CMC of 5.53 × 10−5 mol/L. The surfactant was superior in surface active properties to the reference surfactants SDBS and DADS-C12. The interfacial tension (IFT) of the studied crude oil–water system (surfactant concentration 0.1 g/L, NaOH concentration 0.5 g/L, and experimental temperature 50 °C) dropped to 1.1 × 10−4 mN/m, which can fulfil the requirement of surfactants for oil displacement. An aqueous solution of the surfactant and crude oil was emulsified by shaking, which formed a highly stable oil-in-water (O/W) emulsion with particle size of 5–20 μm. The oil displacement effect was almost 12%.

Journal

Journal of Surfactants and DetergentsSpringer Journals

Published: Jun 22, 2017

References

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