title: Synthesis and Interfacial Activity of Novel Heterogemini Sulfobetaines in Aqueous Solution.
abstract: Three new heterogemini sulfobetaines and their chloride salts were synthesised. The interfacial activities of the obtained chlorides in aqueous solution were studied by equilibrium and dynamic surface tension measurements. The critical micelle concentration, surface excess concentration, minimum area per surfactant molecule and standard Gibbs energy of adsorption as well as micelle lifetime and diffusion coefficient were determined. The adsorption properties and micelle lifetime of these compounds significantly depend on the length of alkyl chain. The critical micelle concentration decreases with increasing chain length of the compounds considered. The values of the diffusion coefficient ofN-alkyl-N-methyl-N-(3-sulfopropyl)-6-(N-alkyl-N-methylamino)hexylammonium chloride tend to decrease as the concentration is increased.
authors: Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland.
authors: Dobrawa
authors: D
authors: Kwaśniewska
authors: Institute of Technology and Chemical Engineering, Poznan University of Technology, pl. Skłodowskiej-Curie 2, 60-965 Poznan, Poland.
authors: Katarzyna
authors: K
authors: Staszak
authors: Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland.
authors: Daria
authors: D
authors: Wieczorek
authors: Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland.
authors: Ryszard
authors: R
authors: Zieliński
keywords: Sulfobetaine; Surface tension; Zwitterions