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A series of new cationic surfactants was prepared by condensation of lactic acid with N,N ‐dimethyl propylamine, followed successively by acetylation with acid chloride or ester and by quaternization with dimethylsulfate. Each surfactant and its precursors' structural assignments were based on infrared spectra and 1 H and 13 C nuclear magnetic resonance spectra. Critical micelle concentrations, contact angles, kinetics of drop spreading, and foam capacities were determined.
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Anoune et al. (2000) studied this question.
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