Excess Molar Volumes of Binary Mixtures of Hexanol and Polyethers at 25°C

被引：0
作者：
A. Serna
S. Villa
I. García De La Fuente
J. A. González
J. C. Cobos
机构：
[1] Universidad de Burgos,Departamento de Física, Facultad de Ciencias
[2] Universidad de Valladolid,G.E.T.E.F. Departamento de Termodinámica y Física Aplicada, Facultad de Ciencias
来源：
Journal of Solution Chemistry | 2001年 / 30卷
关键词：
Experimental; excess volumes; 1-hexanol; n-polyethers; self-association; intetitial accommodaton;
D O I：
暂无
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摘要：
Excess molar volumes VmE at 25°C and atmospheric pressure over the entire composition range for binary mixtures of 1-hexanol with n-polyethers: 2,5-dioxahexane, 3,6-dioxaoctane, 2,5,8-trioxanonane, 3,6,9-trioxaundecane, 5,8,11-trioxapentadecane, 2,5,8,11-tetraoxadodecane, and 2,5,8,11,14-pentaoxapentadecane are reported from densities measured with a vibrating-tube densimeter. Systems containing 2,5-dioxahexane, 2,5,8-trioxanonane, 2,5,8,11-tetraoxadodecane or 2,5,8,11,14-pentaoxapentadecane are characterized by VmE > 0, probably due to predominant positive contributions to VmE from the disruption of H bonds of 1-hexanol and to physical interactions. In contrast, mixtures with 3,6-dioxaoctane, 3,6,9-trioxaundecane, and 5,8,11-trioxapentadecane are characterized by VmE < 0, indicating that the negative contribution to VmE from interstitial accommodation is more important.
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页码：253 / 261
页数：8
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