کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5408110 | 1506531 | 2017 | 14 صفحه PDF | دانلود رایگان |
- Volumetric, acoustic and viscometric studies of thiamine-HCl in glucose/lactose
- Apparent molar volume and transfer volume were calculated and analyzed.
- Ionic-hydrophilic and hydrophilic-hydrophilic interactions are present.
- Hepler's constant and large values of Îμ02# predicts thiamine-HCl as structure maker.
- Pair and triplet interaction coefficients suggest pair wise interactions in mixtures.
Apparent molar volume, VÏ, apparent molar isentropic compression, K Ï,s and viscosity B-coefficients have been evaluated for one of the vitamins, thiamine hydrochloride (thiamine-HCl), in aqueous solutions of two carbohydrates, glucose and lactose, at temperatures (293.15-313.15) K from density, speed of sound and viscosity data. Accordingly, limiting apparent molar volume, V 0Ï, was obtained from Redlich-Meyer equation whereas limiting apparent molar isentropic compression, K 0Ï,s, was calculated on the basis of Debye-Huckel theory. The transfer parameters (ÎtrV 0Ï, ÎtrK 0Ï,s and ÎtrB) at infinite dilution, limiting apparent molar expansivity, E 0Ï, Hepler's constant, (â2V 0Ï/â T2)P, thermal expansion coefficient, α, pair and triplet interaction coefficients and solvation number, Sn, have also been estimated. The viscosity B-coefficients and activation parameters have been obtained from Jones-Dole equation and transition state theory. The results have been discussed in terms of competing patterns of interactions prevailing in the solute and solvent.
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Journal: Journal of Molecular Liquids - Volume 240, August 2017, Pages 642-655