Naslov
Effect of the Spacer Carbon Numbers on the Adsorption and Association of Dissymmetric Gemini Surfactants

Autori
Sikirić, Maja ; Primožič, Ines ; Talmon, Ishi ; Filipović-Vinceković, Nada

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

Izvornik
Book of Abstracts : 14th SIS Surfactants in Solution Symposium / Mittal, K. L. - Barcelona : Universitat de Barcelona, 2002, 73-73

Skup
14th SIS Surfactants in Solution Symposium

Mjesto i datum
Barcelona, Španjolska, 09.06.2002. - 14.06.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
adsorption ; association ; gemini surfactants

Sažetak
A novel series of dissymmetric bisquarternary ammonium surfactants with a general formula C12H25(CH3)2N(CH2)sN(CH3)2C14H29Br2 (12-s-14), where s = 2, 6, 10 has been synthetised and characterised by FTIR, NMR and electrospray mass spectroscopy. Effect of the carbon number of the alkanediyl spacer on the adsorption and association in aqueous solution were studied by surface tension, conductometry, potentiometry, viscometry, dynamic light scattering and cryo-TEM. Surface and association properties show a behavior closely related to that of their symmetric counterparts. The length of the spacer chains, as well as the attractive and repulsive interactions of the surfactant molecules play an important role in determining the equilibrium area per molecule affecting both, the adsorption at the air/solution interface and morphology of aggregates formed in solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA