Abstract:
Two new surfactants were synthesized from renewable materials via click chemistry. The
starting materials are carbohydrates (e.g. methyl glycoside) and fatty acid derivatives based
on both saturated and unsaturated fatty acids with a total chain length of C12 and C18. Target
applications of these surfactants focus on the stabilization or emulsions, in particular water-inoil emulsions. The synthetic scheme applied a multi-step methodology, including activation,
functionalization and finally coupling with fatty acids derivatives by using click chemistry
technique. Surfactants were identified and their purity confirmed by NMR type 1H and 13C in
addition to high resolution mass spectroscopy. Physical properties were studied by optical
polarizing microscopy (OPM), differential scanning calorimetry (DSC) and surface tension
measurements. Lyotropic phases were investigated by contact penetration with water under
the OPM, while surface tension measurements used the DuNouy ring approach. The latter
enables the determination of critical micelle concentrations
