Synthesis and Surface Properties of Novel Carboxylic Ester-Containing Imidazolium-Based Zwitterionic Surfactants: Monoalkyl 2-(3-Methylimidazolium-1-yl) Succinate Inner Salts
| Autor: | Zhili Lan, Yujuan Xin, Xuewei Chen, Fangcai Yu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Chemistry
General Chemical Engineering Inorganic chemistry 02 engineering and technology Carbon-13 NMR 010402 general chemistry 021001 nanoscience & nanotechnology Surface pressure 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Surface tension symbols.namesake Isoelectric point Gibbs isotherm Adsorption Critical micelle concentration Polymer chemistry Proton NMR symbols Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Surfactants and Detergents. 20:1121-1127 |
| ISSN: | 1558-9293 1097-3958 |
| DOI: | 10.1007/s11743-017-1987-z |
| Popis: | A series of carboxylic ester-containing imidazolium-based zwitterionic surfactants, namely, monoalkyl 2-(3-methylimidazolium-1-yl) succinate inner salts (CnMimSU, n = 8, 10, 12 and 14), have been synthesized. Their structures were confirmed by 1H NMR, 13C NMR and FTIR. The typical physicochemical properties parameters such as isoelectric point, critical micelle concentration (CMC), surface tension at CMC (γ CMC), surface pressure at CMC (ΠCMC), adsorption efficiency (pC 20), the maximum surface excess (Γ m), the minimum molecular cross-sectional area (A min) and the value of CMC/C 20 were determined. The effect of the long-chain length on the important physicochemical properties of CnMimSU was studied. It is found that the surface activity of CnMimSU is enhanced with the long-chain length increases. |
| Databáze: | OpenAIRE |
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