Preparation and surface activity study of amino acid surfactants - 07/05/19

Doi : 10.1016/j.crci.2018.11.009

Gang Chen ^a,^b,^⁎ , Jiao Yan ^a, Qiaona Liu ^a, Jie Zhang ^a, Hong Li ^a,^b, Jinling Li ^a,^c, Chengtun Qu ^a,^c,^⁎ , Yongming Zhang ^d
^a College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710065, China
^b Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi'an, 710065, China
^c State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing, 102206, China
^d School of Science, Xijing University, Xi'an, 710123, China

^∗Corresponding author.^∗∗Corresponding author.

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Abstract

Quaternary ammonium cationic surfactants are widely applied in many different fields, such as textile, cosmetic, and petrochemical industries. However, little research has been done on the effects of anion on cationic surfactants. In this study, two new surfactants, cetyltrimethylammonium glycine (CTAG) and octadecyltrimethylammonium glycine (OTAG), were prepared in a simple way using cetyltrimethylammonium chloride (CTAC), octadecyltrimethylammonium chloride (OTAC), and glycine. Then the surface activities were evaluated and compared with the two raw materials. The surface activity of CTAG and OTAG, including surface tension, foaming ability, and emulsification, is better than that of CTAC and OTAC in each case. With the glycine, the corrosion inhibition efficiencies of CTAG and OTAG are 91.12% and 97.89%, respectively, which are more effective than that of CTAC and OTAC. The superior performance of the two surfactants will be very helpful for developing an effective solution in the future.

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Keywords : Cationic surfactants, Glycine, Surface tension, Foam ability, Emulsification, Corrosion inhibition