759440-17-0Relevant academic research and scientific papers
Synthesis and surface active properties of a novel linear dodecyl diphenyl ether sulfonate Gemini surfactant
Hujun, Xu,Qicheng, Liu,Dandan, Chen,Xiaoya, Liu
, p. 703 - 707 (2013/02/25)
The linear dodecyl diphenyl ether sulfonate gemini surfactant (C 12-DLADS) has been synthesized by a new route from lauric acid according to a five-step reaction sequence consisting of acidification, Friedel-Crafts acylation, Clemmensen reduction, sulfonation and a neutralization reaction. The surfactant and intermediates were characterized by 1H-NMR, HPLC/MS and elemental analysis. The properties have been studied by surface tension (γCMC) and conductivity measurements. The thermodynamic parameters of micellization were calculated. The test results show that C12-DLADS has lower critical micelle concentration (CMC) and better capability for lowering the γCMC. The γCMC and CMC are 36.04 mN/m and 6.03 × 10-4 mol/L respectively at 45 °C. Moreover, with the increase in temperature, the conductivity of C12-DLADS increased, while the counterion binding K0 decreased. The thermodynamic data show that the micellization process for the surfactant C12-DLADS is entropy driven. AOCS 2012.
