Micellization of pentanediyl-1,5-bis(hydroxyethylmethyl hexadecylammonium bromide) as a cationic gemini surfactant in aqueous solutions: Investigation using conductometry and fluorescence techniques

Abstract

Pentanediyl-1,5-bis (hydroxyethylmethylhexadecylammonium bromide) was synthesized and characterized as a type of novel gemini cationic surfactant. Its solution properties were determined at various temperatures by conductivity measurements and the fluorescence quenching technique. The CMC increased in the range of 1.85 to 2.77 μmol·L-1 as the temperature increased. The aggregation number was determined at various concentrations of NaBr solutions by the fluorescence quenching of pyrene. The thermodynamic parameters of micellization were determined using the mass law equation and the values of ΔG°, ΔH °and ΔS ° were determined for the micellization process. © Springer Science+Business Media, LLC 2011.