6533b830fe1ef96bd1297c4c

RESEARCH PRODUCT

Physico-chemical investigation of the state of cyanamide confined in AOT and lecithin reversed micelles

Alessandro LongoPietro CalandraV. Turco LiveriA. Ruggirello

subject

1h nmr spectroscopyfood.ingredientSodiumASSEMBLIESchemistry.chemical_elementMicelleLecithinSurfaces Coatings and FilmsFT-IRchemistry.chemical_compoundfoodAEROSOL-OTchemistrySOLVATION DYNAMICSMICROEMULSIONSMaterials ChemistryNANOPARTICLESOrganic chemistryCyanamidePhysical and Theoretical ChemistryACETAMIDENuclear chemistrySettore CHIM/02 - Chimica Fisica

description

Sodium bis(2-ethylhexyl)sulfosuccinate (AOT) and lecithin reversed micelles containing cyanamide have been investigated by small-angle X-ray scattering, FT-IR, and 1H NMR spectroscopy at various cyanamide-to-surfactant molar ratio (X) and at fixed surfactant concentration (0.1 mol kg-1). Experimental data are consistent with a model of cyanamide molecules confined in reversed micelles, quite uniformly distributed among them and mainly located among surfactant headgroups. SAXS data analysis leads also to hypothesize a unidimensional growth of the reversed micelles with increasing the X value. Moreover, the cyanamide state and the cyanamide/cyanamide interactions in reversed micelles have been found to be different from those in pure solid cyanamide attributable to system-specific cyanamide/surfactant headgroup interactions.

yearjournalcountryeditionlanguage
2004-05-20
10.1021/jp0492422http://hdl.handle.net/10447/22297