Amidoamine Gemini surfactants based dimethylamino propyl amine: Preparation, characterization and evaluation as biocide

作者：Shaban Samy M^*; Aiad I; Moustafa H Y; Hamed Ahmed

来源：Journal of Molecular Liquids, 2015, 212: 907-914.

DOI：10.1016/j.molliq.2015.10.048

• Surface tension
• Conductivity
• Gemini surfactants
• Micellization thermodynamics
• Antibiotic effect

The chemical structures of three prepared amidoamine Gemini surfactant were confirmed using FTIR and (HNMR)-H-1 spectroscopic methods. The synthetic routes passed through two steps, the first one is the formation of the amide and the second one is the quatemization of the prepared amide with dibromo propane. The surface and thermodynamic parameters were determined from surface tension and conductivity measurements. The obtained critical micelle concentrations from both techniques are similar. The values of CMC were found to depend on both solution temperature and hydrophobic character. The change in free energy of micellization and adsorption showed a tendency of synthesized Gemini surfactants to adsorb at the interface first then forming micelle in the bulk. The prepared Gemini surfactants act as good antibiotic against some tested bacteria and fungi.

• 出版日期2015-12