Abstract
Abstract The Gemini surfactant, N,N′-bis(sodium lauryl acyl proyl acid) ethylenediamine, was synthesized and symbolized as DLMC. The surface chemical properties and micellar behavior of DLMC with polyethylene oxide lauryl ether (C12E6) in 0.1 mol · L−1 sodium bromide aqueous solution were investigated by surface tention measurements at 298 K. The critical micelle concentration (cmc) of DLMC is 1.01 × 10−4 mol L−1, and the cmc values of the binary surfactant system are all lower than those of pure constituent surfactants. The interaction parameter β of the binary surfactant system was calculated, which indicates the existence of synergism in surface tension reduction efficiency, mixed micelle formation and surface tension reduction ability.
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