scholarly journals Quantification of the liquid window of deep eutectic solvents

2018 ◽  
Vol 54 (95) ◽  
pp. 13351-13354 ◽  
Author(s):  
Laura J. B. M. Kollau ◽  
Mark Vis ◽  
Adriaan van den Bruinhorst ◽  
A. Catarina C. Esteves ◽  
Remco Tuinier
Keyword(s):  
Phase Diagram ◽  
Interaction Parameter ◽  
Eutectic Temperature ◽  
Deep Eutectic Solvents ◽  
Eutectic Phase ◽  
Eutectic Phase Diagram

The non-ideality of the eutectic phase diagram is quantified using a single interaction parameter that could be determined directly from the experimental eutectic temperature of the mixture.

scholarly journals Phase Diagram of Binary Alloy Nanoparticles under High Pressure

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2929
Author(s):  
Han Gyeol Kim ◽  
Joonho Lee ◽  
Guy Makov
Keyword(s):  
Phase Diagram ◽  
Phase Diagrams ◽  
Interaction Parameter ◽  
Excess Volume ◽  
Eutectic Temperature ◽  
Calphad Method ◽  
Alloy Nanoparticles ◽  
Thermodynamic Conditions ◽  
Nanoparticle System ◽  
Pressure Phase

CALPHAD (CALculation of PHAse Diagram) is a useful tool to construct phase diagrams of various materials under different thermodynamic conditions. Researchers have extended the use of the CALPHAD method to nanophase diagrams and pressure phase diagrams. In this study, the phase diagram of an arbitrary A–B nanoparticle system under pressure was investigated. The effects of the interaction parameter and excess volume were investigated with increasing pressure. The eutectic temperature was found to decrease in most cases, except when the interaction parameter in the liquid was zero and that in the solid was positive, while the excess volume parameter of the liquid was positive. Under these conditions, the eutectic temperature increased with increasing pressure.

The Formation of Epitaxial Eutectic Modulated Structures

1993 ◽  
Vol 311 ◽  
Author(s):  
Alexander L. Roytburd ◽  
Gisuk Sung
Keyword(s):  
Phase Diagram ◽  
Eutectic Point ◽  
System Change ◽  
Liquid Solution ◽  
Eutectic Phase ◽  
Two Phase ◽  
Eutectic Phase Diagram ◽  
Elastic Interactions ◽  
Modulated Structures ◽  
Consolute Point

ABSTRACTThe thermodynamics of the formation of a coherent epitaxial two-phase modulated structures from a liquid solution is considered. It is shown that elastic interactions in the epitaxial system change the topologic features of the eutectic phase diagram. As a consequence an eutectic point splits into two eutectic points or it is transformed into a consolute point.

A new treatment for calculating activities from a simple eutectic phase diagram

Calphad ◽  
1992 ◽  
Vol 16 (3) ◽  
pp. 261-268 ◽  
Author(s):  
Zhang Fan ◽  
Xie Fan-you ◽  
Chou Kuo-chih
Keyword(s):  
Phase Diagram ◽  
Eutectic Phase ◽  
Eutectic Phase Diagram ◽  
New Treatment

scholarly journals Investigations on the Phase Diagram and Interaction Parameter of Poly(styrene-b-1,3-cyclohexadiene) Copolymers

2017 ◽  
Vol 50 (6) ◽  
pp. 2354-2363 ◽  
Author(s):  
Konstantinos Misichronis ◽  
Jihua Chen ◽  
Adam Imel ◽  
Rajeev Kumar ◽  
James Thostenson ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Interaction Parameter

X-ray scattering study on the crystalline and semi-crystalline structure of water/PEG mixtures in their eutectic phase diagram

Soft Matter ◽  
2020 ◽  
Vol 16 (45) ◽  
pp. 10260-10267
Author(s):  
Björn Kuttich ◽  
Alexander Matt ◽  
Christian Appel ◽  
Bernd Stühn
Keyword(s):  
Eutectic Temperature ◽  
Solid Phase ◽  
Pure Water ◽  
Liquidus Line ◽  
X Ray ◽  
Water Ice ◽  
Structure Of Water ◽  
Eutectic Phase Diagram ◽  
X Ray Scattering ◽  
Scattering Study

Water/PEG mixtures start to phase separate below the liquidus line. Above the eutectic temperature the solid phase is either pure water ice or semi-crystalline PEG. Below the eutectic line both crystals coexist, no mixed-crystalline phase is found.

Predicting the Formation and Stability of Amorphous Small Molecule Binary Mixtures from Computationally Determined Flory−Huggins Interaction Parameter and Phase Diagram

2010 ◽  
Vol 7 (3) ◽  
pp. 795-804 ◽  
Author(s):  
Katja Pajula ◽  
Markku Taskinen ◽  
Vesa-Pekka Lehto ◽  
Jarkko Ketolainen ◽  
Ossi Korhonen
Keyword(s):  
Phase Diagram ◽  
Binary Mixtures ◽  
Interaction Parameter ◽  
Small Molecule

scholarly journals Design of Deep Eutectic Systems: A Simple Approach for Preselecting Eutectic Mixture Constituents

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1077 ◽  
Author(s):  
Ahmad Alhadid ◽  
Liudmila Mokrushina ◽  
Mirjana Minceva
Keyword(s):  
Binary Systems ◽  
Eutectic Temperature ◽  
Eutectic Mixture ◽  
Deep Eutectic Solvents ◽  
Simple Approach ◽  
Molecular Structures ◽  
Melting Enthalpy ◽  
Wide Range ◽  
Eutectic Systems ◽  
Melting Entropy

Eutectic systems offer a wide range of new (green) designer solvents for diverse applications. However, due to the large pool of possible compounds, selecting compounds that form eutectic systems is not straightforward. In this study, a simple approach for preselecting possible candidates from a pool of substances sharing the same chemical functionality was presented. First, the melting entropy of single compounds was correlated with their molecular structure to calculate their melting enthalpy. Subsequently, the eutectic temperature of the screened binary systems was qualitatively predicted, and the systems were ordered according to the depth of the eutectic temperature. The approach was demonstrated for six hydrophobic eutectic systems composed of L-menthol and monocarboxylic acids with linear and cyclic structures. It was found that the melting entropy of compounds sharing the same functionality could be well correlated with their molecular structures. As a result, when the two acids had a similar melting temperature, the melting enthalpy of a rigid acid was found to be lower than that of a flexible acid. It was demonstrated that compounds with more rigid molecular structures could form deeper eutectics. The proposed approach could decrease the experimental efforts required to design deep eutectic solvents, particularly when the melting enthalpy of pure components is not available.

A refined phase diagram of the tert-butanol–water system and implications on lyophilization process optimization of pharmaceuticals

2020 ◽  
Vol 22 (3) ◽  
pp. 1583-1590 ◽  
Author(s):  
Bakul S. Bhatnagar ◽  
Jayesh Sonje ◽  
Evgenyi Shalaev ◽  
Susan W. H. Martin ◽  
Dirk L. Teagarden ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Process Optimization ◽  
Eutectic Temperature ◽  
Water System ◽  
Tert Butanol

In TBA–water mixtures, using DSC and XRD, the eutectic temperature (−8 °C) and composition (22.5% w/w TBA) were determined.

Sign in / Sign up

Export Citation Format

Share Document