A centrifuge method to determine the solid–liquid phase behavior of eutectic mixtures

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Abstract

The centrifuge method is a novel, equilibrium-based, analytical procedure that allows the construction of solid–liquid phase diagrams of binary eutectic mixtures. In this paper, the development, optimization, and successful verification of the centrifuge method are described. Contrary to common dynamic analysis techniques—differential scanning calorimetry and hot-stage microscopy—the studied mixtures are equilibrated at constant temperature. Therefore, the mixtures do not need to be recrystallized from the melt during analysis. This offers a great advantage for mixtures that exhibit strong supercooling behavior rather than direct crystallization. The centrifuge method was verified by reproducing the binary eutectic phase behavior of both the nearly ideal biphenyl–bibenzyl system and the strongly non-ideal deep eutectic solvent (DES) urea–choline chloride, which is prone to supercooling. Hence, the centrifuge method offers an alternative route to common dynamic analysis techniques for the quantification of the liquid range of DESs and other binary eutectic mixtures.
LanguageEnglish
Article number224505
Number of pages11
JournalJournal of Chemical Physics
Volume149
Issue number22
DOIs
StatePublished - 14 Dec 2018

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centrifuges
Centrifuges
Phase behavior
eutectics
Eutectics
liquid phases
Liquids
Supercooling
supercooling
Dynamic analysis
choline
Crystallization
Choline
ureas
Phase diagrams
Urea
Differential scanning calorimetry
Microscopic examination
heat measurement
chlorides

Cite this

@article{59f2259703e3435182806434ae70886b,
title = "A centrifuge method to determine the solid–liquid phase behavior of eutectic mixtures",
abstract = "The centrifuge method is a novel, equilibrium-based, analytical procedure that allows the construction of solid–liquid phase diagrams of binary eutectic mixtures. In this paper, the development, optimization, and successful verification of the centrifuge method are described. Contrary to common dynamic analysis techniques—differential scanning calorimetry and hot-stage microscopy—the studied mixtures are equilibrated at constant temperature. Therefore, the mixtures do not need to be recrystallized from the melt during analysis. This offers a great advantage for mixtures that exhibit strong supercooling behavior rather than direct crystallization. The centrifuge method was verified by reproducing the binary eutectic phase behavior of both the nearly ideal biphenyl–bibenzyl system and the strongly non-ideal deep eutectic solvent (DES) urea–choline chloride, which is prone to supercooling. Hence, the centrifuge method offers an alternative route to common dynamic analysis techniques for the quantification of the liquid range of DESs and other binary eutectic mixtures.",
author = "{van den Bruinhorst}, Adriaan and Kollau, {Laura J.B.M.} and Kroon, {Maaike C.} and Jan Meuldijk and Remco Tuinier and Esteves, {A. Catarina C.}",
year = "2018",
month = "12",
day = "14",
doi = "10.1063/1.5051515",
language = "English",
volume = "149",
journal = "Journal of Chemical Physics",
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publisher = "American Chemical Society",
number = "22",

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TY - JOUR

T1 - A centrifuge method to determine the solid–liquid phase behavior of eutectic mixtures

AU - van den Bruinhorst,Adriaan

AU - Kollau,Laura J.B.M.

AU - Kroon,Maaike C.

AU - Meuldijk,Jan

AU - Tuinier,Remco

AU - Esteves,A. Catarina C.

PY - 2018/12/14

Y1 - 2018/12/14

N2 - The centrifuge method is a novel, equilibrium-based, analytical procedure that allows the construction of solid–liquid phase diagrams of binary eutectic mixtures. In this paper, the development, optimization, and successful verification of the centrifuge method are described. Contrary to common dynamic analysis techniques—differential scanning calorimetry and hot-stage microscopy—the studied mixtures are equilibrated at constant temperature. Therefore, the mixtures do not need to be recrystallized from the melt during analysis. This offers a great advantage for mixtures that exhibit strong supercooling behavior rather than direct crystallization. The centrifuge method was verified by reproducing the binary eutectic phase behavior of both the nearly ideal biphenyl–bibenzyl system and the strongly non-ideal deep eutectic solvent (DES) urea–choline chloride, which is prone to supercooling. Hence, the centrifuge method offers an alternative route to common dynamic analysis techniques for the quantification of the liquid range of DESs and other binary eutectic mixtures.

AB - The centrifuge method is a novel, equilibrium-based, analytical procedure that allows the construction of solid–liquid phase diagrams of binary eutectic mixtures. In this paper, the development, optimization, and successful verification of the centrifuge method are described. Contrary to common dynamic analysis techniques—differential scanning calorimetry and hot-stage microscopy—the studied mixtures are equilibrated at constant temperature. Therefore, the mixtures do not need to be recrystallized from the melt during analysis. This offers a great advantage for mixtures that exhibit strong supercooling behavior rather than direct crystallization. The centrifuge method was verified by reproducing the binary eutectic phase behavior of both the nearly ideal biphenyl–bibenzyl system and the strongly non-ideal deep eutectic solvent (DES) urea–choline chloride, which is prone to supercooling. Hence, the centrifuge method offers an alternative route to common dynamic analysis techniques for the quantification of the liquid range of DESs and other binary eutectic mixtures.

U2 - 10.1063/1.5051515

DO - 10.1063/1.5051515

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JO - Journal of Chemical Physics

T2 - Journal of Chemical Physics

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SN - 0021-9606

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