Cargando…
Aggregation Behavior of Long-Chain Piperidinium Ionic Liquids in Ethylammonium Nitrate
Micelles formed by the long-chain piperidinium ionic liquids (ILs) N-alkyl-N-methylpiperidinium bromide of general formula C(n)PDB (n = 12, 14, 16) in ethylammonium nitrate (EAN) were investigated through surface tension and dissipative particle dynamics (DPD) simulations. Through surface tension me...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2014
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6271972/ https://www.ncbi.nlm.nih.gov/pubmed/25474288 http://dx.doi.org/10.3390/molecules191220157 |
Sumario: | Micelles formed by the long-chain piperidinium ionic liquids (ILs) N-alkyl-N-methylpiperidinium bromide of general formula C(n)PDB (n = 12, 14, 16) in ethylammonium nitrate (EAN) were investigated through surface tension and dissipative particle dynamics (DPD) simulations. Through surface tension measurements, the critical micelle concentration (cmc), the effectiveness of surface tension reduction (Π(cmc)), the maximum excess surface concentration (Г(max)) and the minimum area occupied per surfactant molecule (A(min)) can be obtained. A series of thermodynamic parameters ([Formula: see text] , [Formula: see text] and [Formula: see text]) of micellization can be calculated and the results showed that the micellization was entropy-driven. In addition, the DPD simulation was performed to simulate the whole aggregation process behavior to better reveal the micelle formation process. |
---|