Synthesis of Novel Zwitterionic Heterogemini Surfactants Derived from Fatty Acid and Investigation of Their Behavior at the Air-Water Interface

Title:Synthesis of Novel Zwitterionic Heterogemini Surfactants Derived from Fatty Acid and Investigation of Their Behavior at the Air-Water Interface

Volume: 12 Issue: 8

Author(s): Erlei Yu, Xamxi Kamar Mamat, Yagang Zhang and Wumanjiang Eli

Affiliation:

Keywords: Zwitterionic, heterogemini, surfactants, fatty acid, cationic, non-ionic.

Abstract: A series of novel cationic–non-ionic heterogemini surfactants (C_n-1EC-s-C_m where n and m represents the hydrocarbon chain length of fatty acid and aliphatic amine, n=12, 14, 16, 18, m=12, 14, 16) were synthesized from fatty acid, epichlorohydrin and aldciphatic amine. The chemicals tructures of the surfactants were characterized by IR spectra, NMR, ESI-MS and elemental analysis. Their critical micelle concentrations (CMC) in the aqueous solutions were determined by surface-tension at 25°C.Relationship between γ_cmc and hydrophobic chain length was established which showed a large increase upon increasing of chain length with ester. The surface-tension measurements ofC_n-1EC-s-C_m showed a low CMC, which greatly improve the efficiency in lowering the surface tension. Furthermore, adsorption and micellization behavior of C_n-1EC-s-C_m were investigated by measuring minimum average area per surfactant molecule and standard free energy.

Cite this article as:

Yu Erlei, Kamar Mamat Xamxi, Zhang Yagang and Eli Wumanjiang, Synthesis of Novel Zwitterionic Heterogemini Surfactants Derived from Fatty Acid and Investigation of Their Behavior at the Air-Water Interface, Letters in Organic Chemistry 2015; 12 (8) . https://dx.doi.org/10.2174/1570178612666150629181035