کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11006603 | 1506503 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Volumetric and compressibility behavior of l-valine in aqueous poly ethylene glycol solutions at Tâ¯=â¯(298.15, 308.15 and 318.15) K
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The density and sound velocity measurements were carried out on l-valine (2-amino-3-methyl butanoic acid) in pure water and in aqueous solutions of 0.02 w/w of PEG400, PEG2000 and PEG6000 at Tâ¯=â¯(298.15, 308.15 and 318.15) K at ambient pressure. From these experimental data, the values of the apparent molar volume, isentropic compressibility and apparent molar isentropic compressibility were evaluated and fitted to the Redlich - Mayer equation from which the corresponding infinite dilution molar properties were obtained. Furthermore, the effect of molar mass PEG and temperature on the volumetric and comperssibility properties of the mentioned systems have been studied. The results show that the structure and molar mass of the polymer don't affect on the values of apparent molar volume, isentropic compressibility and apparent molar isentropic compressibility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 869-873
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 869-873
نویسندگان
Tahereh Moradian, Hossein Iloukhani, Khatereh Khanlarzadeh,