کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10377485 | 880736 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Volumetric behavior of a bolaamphiphile in different amides-water and ethylene glycol-water mixtures
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The effect of binary aqueous mixtures of ethylene glycol (EG), formamide (FA), N-methylformamide (NMF), dimethylformamide (DMF), and their pure phase on the apparent molar volume ÏV of the bolaamphiphile decamethonium bromide (C10Me6) has been investigated at 298.15 K. The behavior of standard molar volumes V20 and transfer volumes ÎtÏV of C10Me6 from water to solvent/water (S/W) binary mixtures, shows different minima and maxima depending on the composition of the solvent. This behavior is influenced by the nature of the cosolvent and on the type of the solute and more or less corresponds to volumetric changes in the S/W mixture. The investigation of the transfer volumes in different fixed concentrations reveals an inversion of ÎtÏV values between the compositions, which suggests a differentiation of the effects of different volume contributions on the partial molar volume of ions. The correlation of ÎtÏV with the dielectric constant of the aqueous amide mixtures shows that the behavior of ÎtÏV vs xamide reflects the changes of ÉE vs xamide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 292, Issue 1, 1 December 2005, Pages 236-243
Journal: Journal of Colloid and Interface Science - Volume 292, Issue 1, 1 December 2005, Pages 236-243
نویسندگان
Fryni Aroni, Antonis Kelarakis, Vasiliki Havredaki,