Pregled bibliografske jedinice broj: 14344
Phase Behavior in Mixture of Cationic and Anionic Surfactants
Phase Behavior in Mixture of Cationic and Anionic Surfactants // Book of Abstracts / Težak, Đurđica (ur.).
Zagreb: Sveučilište u Zagrebu, 1998. str. 57-57 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 14344 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Phase Behavior in Mixture of Cationic and Anionic Surfactants
Autori
Tomašić, Vlasta ; Štefanić, Igor ; Filipović-Vinceković, Nada
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Book of Abstracts
/ Težak, Đurđica - Zagreb : Sveučilište u Zagrebu, 1998, 57-57
Skup
12th Conference of the European Colloid and Interface Society
Mjesto i datum
Cavtat, Hrvatska, 20.09.1998. - 25.09.1998
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
adsorption; association; catanionic surfactants
Sažetak
The phase equilibria of catanionic surfactant aqueous mixtures, hexadecyltrimethylammonium bromide and sodium dodecyl sulfate have been studied by combined polarizing microscopy, light scattering, conductivity, potentiometric, electrophoretic, and surface tension measurements. The phase behavior, formation of variety of microstructures and the properties of the air/solution interface strongly depended on the molar ratio and actual concentration of surfactants. Lamellar catanionic surfactant salt was formed from equimolar mixtures of the reactants. Stable polydispersed vesicles coexisted with crystalline catanionic salt and transformed to the mixed micelles as mixtures shifted from the equimolar range. The amount of catanionic salt was reduced and the amount of vesicles increased as the surfactants molar ratio increase. The formation and stability of different phases are discussed in terms of surfactant molecular packing constraints and electrostatic effects.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
