Heat Capacity and Phase Behavior of Selected Oligo(ethylene glycol)s,Journal of Chemical & Engineering Data

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Heat Capacity and Phase Behavior of Selected Oligo(ethylene glycol)s
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2019-05-03 , DOI: 10.1021/acs.jced.9b00140
Václav Pokorný ₁ , Paulo B. P. Serra ₁ , Michal Fulem ₁ , Carlos F. R. A. C. Lima _{2,

3} , Luis M. N. B. F. Santos ₂ , Květoslav Růžička ₁

Affiliation

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.

中文翻译：

选定的低聚乙二醇的热容和相行为

这项工作旨在为乙二醇和精选的低聚乙二醇（二甘醇，三甘醇，四甘醇，五甘醇和六甘醇）提供可靠的热容量，这些物质是大规模生产的重要工业化学品。此外，新数据扩展了数据库，以便更好地理解能够形成氢键的化合物的复杂行为。使用Tian-Calvet型量热仪在260至358 K的温度范围内测量了乙二醇的等压热容量。使用热通量差示扫描量热仪研究了相行为。

更新日期：2019-05-24

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