Preparation and Evaluation of Some Surface Active Sequesteri

Abstract:
A novel series of chelating agents has been synthesized by the reaction of
ethylenediaminetetraacetic acid, citric acid and polyethylene glycol with
different molecular weights and different number of moles. The unique
structural features of these surfactants have been confirmed by FTIR spectra,
elemental analysis and H1NMR spectrum. These surfactants exhibit excellent
properties in sequestering heavy metal such as copper, lead and mercury. They
show good surfactant properties, including surface tension, effectiveness,
efficiency and emulsifying power. Critical micelle concentration, maximum
surface excess and minimum surface area have been studied. Free energy of
micellization and adsorption have been calculated.