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Microscopic research of lyotropic and thermotropic properties of catanionic dodecylammonium-4-(1-pentylheptyl) benzenesulfonate


Mihelj, Tea; Tomašić, Vlasta
Microscopic research of lyotropic and thermotropic properties of catanionic dodecylammonium-4-(1-pentylheptyl) benzenesulfonate // 21. Godišnji sastanak Hrvatskog mikroskopijskog društva 2013.
Zagreb, Hrvatska, 2013. (poster, nije recenziran, neobjavljeni rad, znanstveni)


Naslov
Microscopic research of lyotropic and thermotropic properties of catanionic dodecylammonium-4-(1-pentylheptyl) benzenesulfonate

Autori
Mihelj, Tea ; Tomašić, Vlasta

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
21. Godišnji sastanak Hrvatskog mikroskopijskog društva 2013.

Mjesto i datum
Zagreb, Hrvatska, 06.12.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Dodecylammonium-4-(1-pentylheptyl) benzenesulfonate; vesicles; thermotropic liquid crystal

Sažetak
General phase behavior of aqueous mixtures of dodecylammonium chloride, DACl, and sodium 4-(1-pentylheptyl) benzenesulfonate, NaDBS, confirms lyotropic properties of examined system. In the regions of equivalent mixtures and those with excess of NaDBS, curved (vesicles) or planar (lamellae) bilayer structures are formed, and in mixtures with DACl in excess spherical to ellipsoidal micelles are favored.Increment of surfactant concentration causes vesicles diameter growth and polydispersity, spontaneous transition of micelles via vesicles to lamellar, onion, and extremely large elongated tubular phases. Thermal properties of new catanionic complex dodecylammonium-4-(1-pentylheptyl) benzenesulfonate, DA-DBS, indicate organization of smectic bilayers composed of repetitive units of dodecylammonium cation and 4-(1-pentylheptyl) benzenesulfonate anion that are V-like packed and the dodecyl chains are tilted to the layer plain.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
098-0982915-2949 - Površinski aktivne tvari, procesi u otopinama i na međupovršinama (Maja Dutour Sikirić, )

Ustanove
Institut "Ruđer Bošković", Zagreb