- Surface and Thermodynamic Properties of Octyl, Dodecyl, and Cetyl Sulfoacetates
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Three anionic surfactants (Na-octysulfoacetate (A8), Na-dodecylsulfoacetate (A12), and Na-cetylsulfoacetate (A16) were prepared from alkyl bromoacetate. Several studies were carried out with aqueous surfactant solutions including surface tension, and electrical conductivity measurements. Surface properties, in particular, critical micelle concentration (CMC), effectiveness (ΠCMC), efficiency (Pc20), maximum surface excess (Γmax), and minimum surface area (Amin) were investigated at different concentrations at 20, 35 and 50°C, respectively. Free energies, enthalpies, entropies of micellization, and adsorption of the surfactants in the aqueous solution were studied.
- Gad,El-Sukkary,Azzam
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- Dodecyl sodium sulfoacetate synthesis process
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The invention relates to the technical field of chemical synthesis processes, particularly to a dodecyl sodium sulfoacetate synthesis process. According to the present invention, by adjusting the feeding weight ratio, optimizing the reaction conditions and improving the dodecyl sodium sulfoacetate synthesis route, the requirements on the compound reaction conditions are low, the control of the reaction is simple, and the yield is increased while the quality of the intermediate product is greatly improved so as to reduce the process control difficulty in the dodecyl sodium sulfoacetate production process and improve the quality and the qualification rate of dodecyl sodium sulfoacetate; and various steps of the preparation process are simple, the solvents and the process conditions are safeand easy to perform, the environmental protection production is achieved, and the method has broad application prospects.
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Paragraph 0034; 0037-0039
(2019/02/13)
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