Heat Capacity and Phase Behavior of Selected Oligo(ethylene glycol)s

被引：5
|
作者：
Pokorny, Vaclav [1 ]
Serra, Paulo B. P. [1 ]
Fulem, Michal [1 ]
Lima, Carlos F. R. A. C. [2 ,3 ,4 ]
Santos, Luis M. N. B. F. [2 ]
Ruzicka, Kvetoslav [1 ]
机构：
[1] Univ Chem & Technol, Dept Phys Chem, Tech 5, Prague 16628 6, Czech Republic
[2] Univ Porto, Dept Chem & Biochem, CIQUP, Fac Sci, Rua Campo Alegre 687, P-4169007 Porto, Portugal
[3] Univ Aveiro, Dept Chem, P-3810193 Aveiro, Portugal
[4] Univ Aveiro, QOPNA, P-3810193 Aveiro, Portugal
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2019年 / 64卷 / 06期
关键词：
TEMPERATURES; 5; K; ETHYLENE-GLYCOL; THERMODYNAMIC PROPERTIES; POLYETHYLENE-GLYCOLS; ENTHALPY INCREMENTS; MOLECULAR-WEIGHT; LIQUID; WATER; POLYSACCHARIDES; MIXTURES;
D O I：
10.1021/acs.jced.9b00140
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This work aims to provide reliable heat capacities for ethylene glycol and selected oligo(ethylene glycol)s (diethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, and hexaethylene glycol), which are industrially important chemicals produced on a large scale. Besides, new data extend the database needed for a better understanding of complex behavior of compounds capable of forming hydrogen bonds. Isobaric heat capacities of ethylene glycols were measured with a Tian-Calvet-type calorimeter in the temperature range of 260 to 358 K. The phase behavior was investigated with a heat-flux differential scanning calorimeter. A simple additive estimation method for liquid heat capacity of oligo(ethylene glycol)s was developed and tested through comparison with newly measured liquid heat capacities of polyethylene glycols 400 and 600.
引用
收藏
页码：2742 / 2749
页数：8
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