Synthesis of New Extended Surfactants Containing a Carboxylate or Sulfate Polar Group

摘要

New extended anionic surfactants with a car-boxylate or sulfate polar head were synthesized from polypropoxylated alcohols,and their structures were confirmed by ~1H and ~(13)C nuclear magnetic resonance analysis.The extended surfactant critical micelle concentration was found to decrease with the length of the polypropylene glycol spacer.Surfactants containing a diethylene glycol link to the head group exhibited a higher critical micelle concentration than did their nondiethoxylated homologs.