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Positron annihilation in and compessibility of n-butanol in ethylene glycol, 1,2 butanediol and 1,4-butanediol: do hydrophobic-like phenomena occur in non-aqueous, highly-associated solvents?
Autorzy
Rok wydania
2004
Czasopismo
Journal of Radioanalytical and Nuclear Chemistry
Numer woluminu
261
Strony
645-649
DOI
10.1023/B:JRNC.0000037108.96600.95
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Experimental results of positron annihilation experiments in solutions of n-butanol in three diols are compared to those of ultrasonic velocity and absorption. Variations of the annihilation parameters with composition show that the effect of the hydrophobic solute on the original diol structure is rather limited and occurs only in the system where ethylene glycol is the solvent. Subtle similarities were found when compared it to the respective results for similar aqueous systems, suggesting that crystalline-like solvates are forming in ethylene glycol. However, no such evidences were found for the systems where butanediols are the solvents. Ultrasonic investigations do not confirm formation of any specific structures. This is caused, most possibly, by the fact that compressibility of solvates is close to those of the pure components and/or that of unstructured medium (regular solution).
Adres publiczny
https://doi.org/10.1023/B:JRNC.0000037108.96600.95
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