Synthesis and Properties of Anionic Surfactants Using Sarcosine and Taurine

Anionic surfactants were synthesized by using an sarcosine, taurine and fatty alcohol with varying the carbon chain length. The structure of synthesized surfactants was confirmed by H-1 NMR analysis. The critical micelle concentration of the synthetic anionic surfactant was 10(-2)similar to 10(-4) mol/L and the surface tension value at the critical micelle concentration was between 21 and 39 mN/m. It was confirmed by the Ross-Miles method that the synthetic surfactant with the carbon chain of 12 showed a good foaming power and stability. In addition, the surfactant using the sacosine was found to have a good affinity in soybean oil while that using taurine in benzene. The physical properties of synthesized surfactants were determined by measuring the critical micelle concentration, foaming power and emulsifying stability.