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Synthesis and Aqueous Solution Properties of α‐Dimethyl Oxamino Dodecyl Acid
Author(s) -
LiYun Qi,
Hao Bao,
Yun Fang,
Yu Hu
Publication year - 2013
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-012-1384-6
Subject(s) - chemistry , lauric acid , aqueous solution , pulmonary surfactant , electrospray ionization , fourier transform infrared spectroscopy , surface tension , mass spectrometry , nuclear chemistry , infrared spectroscopy , chromatography , organic chemistry , chemical engineering , fatty acid , biochemistry , physics , quantum mechanics , engineering
Starting from α‐chloro‐lauric acid which was obtained from lauric acid through selectively chlorinating at the α‐position with chlorine, a novel surfactant α‐dimethyl oxamino dodecyl acid was synthesized with high yield via an economic route. The structure of α‐dimethyl oxamino dodecyl acid was confirmed by means of Fourier transform infrared spectroscopy, electrospray ionization mass spectrometry and 1 H nuclear magnetic resonance spectroscopy. Surface tension, foaming properties and emulsifying measurements were performed to study the aqueous solution properties of the synthesized surfactant. The results showed that the behavior of the α‐dimethyl oxamino dodecyl acid strongly depend on the pH of aqueous solution: it had high surface activity, excellent foaming properties and emulsion stability for paraffin oil at acid pH while the corresponding properties decrease substantially at alkaline pH.