Effect of the Nature of the Spacer on the Aggregation Properties of Gemini Surfactants in an Aqueous Solution
Citations Over TimeTop 10% of 2003 papers
Abstract
The aggregation properties of three dicationic quaternary ammonium gemini surfactants with the same structure, except the spacer group, diethyl ether, six methylene, and p-xylyl, have been studied using electrical conductivity and fluorescence. The critical micelle concentration (cmc) and the micelle aggregation number (N) were determined, and the micropolarity and the microviscosity of the micelle were characterized. The micelle ionization degree (alpha) was obtained by a combination of the electrical conductivity data and the micelle aggregation number. Furthermore, the Gibbs free energy of micellization (deltaGmic) was studied. These results have shown that the nature of the spacer has an important effect on the aggregation properties of gemini surfactants in an aqueous solution. A hydrophilic, flexible spacer prompts micelle formation, which leads to a smaller cmc, smaller alpha, larger N, and more negative deltaGmic. Meanwhile, the microviscosity study indicates that the gemini surfactant with a hydrophilic, flexible spacer forms a more closely packed micelle structure than the one with a hydrophobic, rigid spacer.
Related Papers
- → Synthesis and study of the surface properties of long‐chain alkylnaphthalene sulfonates(2004)12 cited
- → Comment on “Determination of the critical micelle concentration of dodecylguanidine monoacetate (dodine)”(2007)7 cited
- Surface Activity of Sulphonated Oil SS(2010)
- Studies on the Micellization Behavior of Quaternary Ammonium Cationic Surface Active Monomer AMC_(16)AB(2007)
- Study on Synthesis,Characterization and Physical Properties of an Anionic Surfactant(2013)