Abstract
Ethylenediaminetetraacetic acid bound to a lipid (dioctadecyldimethylammonium bromide) has been used as an immobilized ligand system for extracting chromium(III) salts from an aqueous solution. The morphology and nature of the aggregation of the metal-ion-bound lipid—ligand complex has been studied by transmission electron microscopy and differential scanning calorimetry. A strong dependence of the vesicle size on the gel—crystalline phase transition has been observed and the results are rationalized in terms of higher-ordered packing of the large vesicles below the phase transition temperatures.
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