Naslov
Self-Assembling in Mixtures of Sodium Caseinate and Dodecylammonium Chloride Aqueous Solutions

Autori
Vinceković, Marko ; Jurašin, Darija ; Ćurlin, Marija ; Bujan, Marija ; Filipović-Vinceković, Nada

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Marques, E. F. ; Valente, A. J. M. ; Goncalves, J. M - Coimbra : Tipografia Lousanense, 2014, 412-412

ISBN
978-972-99512-3-7

Skup
20th International Symposium on Surfactants in Solution

Mjesto i datum
Coimbra, Portugal, 22.06.2014. - 27.06.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
self-assembling; sodium caseinate; cationic surfactant

Sažetak
Influence of the model cationic surfactant, dodecylammonium chloride (DDACl), on the self-assembly of sodium caseinate (SC) has been investigated by light scattering, zeta potential and rheological measurements as well as by light and confocal laser scanning microscopy. In the absence of DDACl, SC self-assembly proceeds through the formation of submicelles and their aggregation into micelles. DDACl interacts with SC supramolecules via its hydrophilic and hydrophobic groups, inducing changes in their structure, that is depending on DDACl concentration various complexes are formed. DDACl monomers interact with SC in a different way compared to their micelles. Surfactant monomers form soluble complexes (similar to surfactant mixed micelles) at lower while insoluble gelatinous complexes at higher SC concentration. At surfactant micellar concentration soluble complexes with casein chains wrapped around surfactant micelles are formed. The rheological properties were studied in systems with monomer or micellar DDACl and varying SC concentration. The shear stress-shear rate plot showed Newtonian behaviour in all the studied systems, however, the viscosity enhancement strongly depends on the complex interplay between the size and charge as well as the structure of formed complexes.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Poljoprivreda (agronomija)

POVEZANOST RADA