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Synthesis and Interfacial Activity of Novel Heterogemini Sulfobetaines in Aqueous Solution
Author(s) -
Kwaśniewska Dobrawa,
Staszak Katarzyna,
Wieczorek Daria,
Zieliński Ryszard
Publication year - 2015
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-014-1663-5
Subject(s) - chemistry , alkyl , micelle , critical micelle concentration , aqueous solution , pulmonary surfactant , surface tension , gibbs isotherm , adsorption , gibbs free energy , diffusion , chloride , thermodynamics of micellization , inorganic chemistry , aggregation number , organic chemistry , thermodynamics , biochemistry , physics
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 of N ‐alkyl‐ N ‐methyl‐ N ‐(3‐sulfopropyl)‐6‐( N ‐alkyl‐ N ‐methylamino)hexylammonium chloride tend to decrease as the concentration is increased.