Abstract
AbstractA new group of nonionic dicephalic saccharide amides, N‐dodecyl‐N,N‐bis[(3‐d‐gluconylamido)propyl]‐amine, N‐dodecyl‐N,N‐bis[(3‐d‐glucoheptonylamido)propyl]‐amine, and N‐alkyl‐N,N‐bis[(3‐lactobionylamido)propyl]amines (alkyl: n‐C12H25′n‐C16H33′, n‐C18H37) were synthesized and characterized. Their structure and purity were confirmed by means of 1H and 13C nuclear magnetic resonance analysis and electrospray ionization mass spectrometry. Carbon spectra were verified using a DEPT experiment. The surface and interfacial properties such as critical micelle concentration (CMC), standard free energy of micellization, ΔGCMC, surface excess concentration, ΓCMC, and surface area demand per molecule, ACMC, were determined. The tertiary nitrogen atom seems to have a surprising effect on surfactnat packing at the interface.
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