Synthesis, Characterization and Surface Activity of Alkyl m ‐Xylene Sulfonate Isomers
| Autor: | Tao Yu, Huoxin Luan, Wei Ding, Ya-bin Xu, Guangmiao Qu, Wei Tong, Zhong Li, Kang Liu, An-jun Li, Xiao-yu Gao, Guo-yu Liu, Wenxiang Wu, Dandan Yuan, Guo-qiao Li, Jie-cheng Cheng |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
Chemistry General Chemical Engineering Grignard reaction Medicinal chemistry Surfaces Coatings and Films Surface tension symbols.namesake chemistry.chemical_compound Gibbs isotherm Sulfonate Pulmonary surfactant Critical micelle concentration symbols Physical and Theoretical Chemistry Isomerization Alkyl |
| Zdroj: | Journal of Surfactants and Detergents. 15:631-636 |
| ISSN: | 1558-9293 1097-3958 |
| DOI: | 10.1007/s11743-012-1358-8 |
| Popis: | This paper deals with the synthesis of a series of alkyl m-xylene sulfonate isomers (with the m-xylene located at the eighth carbon atom along the long alkyl chain) by the Friedel–Crafts reaction, and the Grignard reaction followed by hydrogenation. The structures were confirmed by 1H NMR. All analytical methods indicated high levels of purity of the isomers with the eighth carbon atom at the long alkyl chain. The critical micelle concentration (CMC), surface tension and maximum surface excess concentration at the CMC and area per molecule at the interface were determined. As the long alkyl chains increased the surfactant molecule tends to pack closely at the gas–liquid interface. Accordingly, the CMC decreased, the adsorption density increased, and the surface tension reduction was strengthened. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink