Apparent and Transfer Molar Volumes for Aqueous Solution Containing Polyethylene Glycols and Amino Acid Ionic Liquids at 298.15 K
| Autor: | Dilip H. Dagade, Sandeep P. Shinde |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Alanine
chemistry.chemical_classification Aqueous solution Biophysics 02 engineering and technology Polyethylene glycol Polyethylene 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Amino acid chemistry.chemical_compound 020401 chemical engineering chemistry Ionic liquid PEG ratio 0204 chemical engineering Physical and Theoretical Chemistry Molecular Biology Alkyl Nuclear chemistry |
| Zdroj: | Journal of Solution Chemistry. 47:1060-1078 |
| ISSN: | 1572-8927 0095-9782 |
| Popis: | The densities of 1-n-butyl-3-methylimidazolium ([Bmim]) based amino acid ionic liquids (AAILs) prepared from glycine [Gly], alanine [Ala], and valine [Val], namely [Bmim][Gly], [Bmim][Ala] and [Bmim][Val], in aqueous ~ 0.2 mol·kg−1 polyethylene glycol (PEG400, PEG600 or PEG1000) and PEG400 solutions containing ~ (0.0946, 0.1891 and 0.3820) mol·kg−1 of [Bmim][Gly], have been determined at 298.15 K. The experimental densities were used to evaluate the apparent molar volumes in the mixed solvent system and further used to obtain transfer molar volumes of AAILs for their transfer from water to aqueous PEG solutions and of PEG400 for its transfer from water to aqueous solutions containing (0.0946, 0.1891 and 0.3820) mol·kg−1 of [Bmim][Gly]. The transfer molar volumes of AAILs and of PEG400 are found to be negative. The effects of alkyl chain-length variation on the anion of AAILs as well as the chain-length of PEG on transfer molar volumes are investigated and discussed in terms of hydrophobic–hydrophilic, hydrophobic–hydrophobic, and ion–hydrophobic interactions. |
| Databáze: | OpenAIRE |
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