Naslov
Amphotropic Behavior of Didodecyldimethylammonium- Dodecylbenzene Sulphonate

Autori
Šegota, Suzana ; Tomašić, Vlasta ; Težak, Đurđica

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

Izvornik
Preparation and Properties of Functionalized Vesicles as Protocell Models - Zagreb / Noethig-Laslo, Vesna - Zagreb, 2005

Skup
Working Group 0006/o3 Meeting, COST 27 Action,

Mjesto i datum
Zagreb, Hrvatska, 20.05.2005. - 21.05.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Amphotropic behavior ; Surfactants

Sažetak
Amphotropic behavior of didodecyldimethylammonium- dodecylbenzene sulphonate (DDADPhSO3) has been investigated by various methods. The formation of a novel catanionic surfactant by spontaneous batch experiment from equimolar solutions can be represented as (CH3)2(C12H25)2N+ + Br¯ + C12H25PhSO3¯ + Na+ ↔ (CH3)2(C12H25)2N SO3PhC12H25 + Na+ + Br¯. DDADPhSO3 exhibited complex thermal behavior characterized by several phase transitions in the solid state as proved by differential scanning calorimetry, X-ray diffraction, and optical birefringence using a polarizing microscope. On heating, optical micrographs indicated smectic structure of liquid crystalline phase. Interplanar distance, relative intensity, Miller indices (from diffraction pattern at small angles and at room temperature) for DDADPhSO3 confirmed the smectic structure in the solid crystalline phase. Formation of vesicles in aqueous solutions revealed that DDADPhSO3 has amphotrophic properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA