Naslov
Interactions in Calcium Oxalate Hydrate/Surfactant Systems

Autori
Sikirić, Maja ; Filipović-Vinceković, Nada ; Babić-Ivančić, Vesna ; Vdović, Neda ; Füredi-Milhofer, Helga

Izvornik
Journal of Colloid and Interface Science (0021-9797) 212 (1999), 2; 384-389

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
calcium oxalate hydrate; surfactant adsorption; transformation

Sažetak
Phase transformation of calcium oxalate dihydrate (COD) into the thermodynamically stable monohydrate (COM) in anionic (sodium dodecyl sulfate (SDS)) and cationic (dodecylammonium chloride (DDACl)) surfactant solutions has been studied. Both surfactants inhibit, but do not stop transformation from COD to COM due to their preferential adsorption at different crystal faces. SDS acts as a stronger transformation inhibitor. The general shape of adsorption isotherms of both surfactants at the solid/liquid interface is of two-plateau-type (LS), but differences in the adsorption behavior exist. They originate from different ionic and molecular structures of crystal surfaces and interactions between surfactant headgroups and solid surface.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Šumarstvo

POVEZANOST RADA