چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| This work investigates physicochemical properties of betaine/propylene glycol (Bet/PG) and betaine/ethylene glycol (Bet/EG) DESs in water by measuring their densities in neat state and aqueous mixtures over the entire composition range at T = (288.15–318.15) K under atmospheric pressure (≈ 85 kPa). The obtained values of density were used to compute the excess molar volumes (VE), molar volume (Vm), apparent molar volume (Vφ,DES), limiting apparent molar expansibility (ϕ0E,1) and the isobaric thermal expansion coefficient (αp,m). The solute-solvent interactions in the investigated solutions are evaluated on the basis of these important physicochemical properties. The results indicated that two studied DESs act as a structure-making solute in water over the whole temperature range using Hepler’s constant. Finally, the experimental densities were correlated with some models including Jouyban-Acree, Jouyban-Acree-van’t Hoff, modified Jouyban-Acree-van’t Hoff, Redlich-Kister and Emmerling. The Redlich-Kister expression and Jouyban-Acree model were also used for representation of VE values. |
| نویسنده | نفر چندم مقاله |
|---|---|
| محمد برزگر جلالی | اول |
| پریسا جعفری | دوم |
| ابوالقاسم جویبان | سوم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| Thermodynamic study of the aqueous pseudo binary mixtures of betaine based deep eutectic solvents at T 293 15 to 313 15 K.pdf | 1401/07/10 | 1256164 | دانلود |
