Synthesis and Properties of Dissymmetric Gemini Surfactants
Authors:
Open Access
- 26 May 2010
- journal article
- research article
- Published by Wiley in Journal of Surfactants and Detergents
- Vol. 14 (1) , 85-90
Abstract
A series of novel dissymmetric gemini cationics surfactants was synthesized by three‐step reactions. The dissymmetric gemini surfactants contain a dodecanoic acid dimethylethylamine ester as the constant cationic part on one side of the hydroxypropyl center and a similar other cationic part, but with a different acid length (from octanoic to palmitic), on the other side. The critical micelle concentration (CMC) and the effectiveness of surface tension reduction (γCMC) were determined. The surface tension measurements of dissymmetric gemini surfactants showed good water solubility, and low CMC had great efficiency in lowering the surface tension and a strong adsorption at the air/water interface. The CMC was observed to increase initially with the increase of the ester bond alkyl group. They also showed good foaming properties and wetting capabilites.Keywords
This publication has 21 references indexed in Scilit:
- Room temperature synthesis of ordered porous silicas templated by symmetric and dissymmetric gemini surfactants [CnH2n+1N(CH3)2(CH2)2(CH3)2NCmH2m+1]Br2Microporous and Mesoporous Materials, 2004
- Effect of the Spacer Length on the Solid Phase Transitions of Dissymmetric Gemini SurfactantsLangmuir, 2003
- Thermodynamics of Hydrophobic Interaction of Dissymmetric Gemini Surfactants in Aqueous SolutionsThe Journal of Physical Chemistry B, 2002
- Adsorption and Association in Aqueous Solutions of Dissymmetric Gemini SurfactantJournal of Colloid and Interface Science, 2002
- Dimeric (Gemini) Surfactants: Effect of the Spacer Group on the Association Behavior in Aqueous SolutionJournal of Colloid and Interface Science, 2002
- Aggregation Properties and Mixing Behavior of Hydrocarbon, Fluorocarbon, and Hybrid Hydrocarbon−Fluorocarbon Cationic Dimeric SurfactantsLangmuir, 2000
- Gemini surfactants, the effect of hydrophobic chain length and dissymmetryChemical Communications, 1997
- Gemini surfactants: a new class of self-assembling moleculesJournal of the American Chemical Society, 1993
- Alkanediyl-.alpha.,.omega.-bis(dimethylalkylammonium bromide) surfactants. 3. Behavior at the air-water interfaceLangmuir, 1993
- Gemini-surfactants: synthesis and propertiesJournal of the American Chemical Society, 1991