Naslov
Influence of Oppositely Charged Surfactant on the Structure of Carrageenan Gels

Autori
Vincekovic, M. ; Bujan, M. ; Šmit, I. ; Tsiourvas, D. ; Dutour Sikiric, M.

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

Izvornik
Abstracts / - , 2006

Skup
COST Chemistry Action D27 &#8220 ; ; Prebiotic Chemistry and Early Evolution&#8221 ; ; , 2. Working Group 0006/04 Meeting &#8220 ; ; Preparation and properties of functionalized vesicles as protocell models&#8221 ; ; ,

Mjesto i datum
Barcelona, Španjolska, 14.12.2006. - 16.12.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
biopolymers; surfactant; gelation
(biopolymers; surfactants; gelation)

Sažetak
Spontaneous vesicle formation in a polyelectrolyte and oppositely charged surfactant mixture is of special interest for elucidating the relations between the molecular structures and structure of self-organized assemblies, as well as phase behavior. Recently, we have shown that the phase behavior of mixtures containing anionic polyelectrolyte, differently charged carrageenans (CAR), and cationic surfactant, n-dodecylammonium chloride (DDACl) strongly depends on concentration of both components (M. Vincekovic et al. Colloids and surfaces A, 255 (2005) 181). The results revealed giant vesicle formation even in extremely dilute solutions. When the surfactant/polyelectrolyte attraction overcomes their solubility, associative phase separation occurs. This results in the formation of precipitated phase, while at higher concentration k- and i-carrageenans undergo sol to gel transition. The present investigation was undertaken in order to explore the properties of nano- and microstructures in CAR/DDACl systems formed at carrageenan gelling conditions.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Prehrambena tehnologija

POVEZANOST RADA