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

Adriaan van den Bruinhorst, Laura J.B.M. Kollau, Maaike C. Kroon, Jan Meuldijk, Remco Tuinier, A. Catarina C. Esteves

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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.
Original languageEnglish
Article number224505
Number of pages11
JournalJournal of Chemical Physics
Volume149
Issue number22
DOIs
Publication statusPublished - 14 Dec 2018

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centrifuges
Centrifuges
Phase behavior
eutectics
Eutectics
Supercooling
supercooling
Dynamic analysis
Calorimetry
Crystallization
Phase diagrams
Chlorides
heat measurement
chlorides
routes
phase diagrams
crystallization
Scanning
optimization
scanning

Cite this

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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.}",
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publisher = "American Chemical Society",
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A centrifuge method to determine the solid–liquid phase behavior of eutectic mixtures. / van den Bruinhorst, Adriaan; Kollau, Laura J.B.M.; Kroon, Maaike C.; Meuldijk, Jan; Tuinier, Remco; Esteves, A. Catarina C.

In: Journal of Chemical Physics, Vol. 149, No. 22, 224505, 14.12.2018.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

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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.

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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.

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