Surface Tension of 50 Deep Eutectic Solvents: Effect of Hydrogen-Bonding Donors, Hydrogen-Bonding Acceptors, Other Solvents, and Temperature

Yu, Chen; Chen, Wenjun; Fu, Li; Yang, Yingze; Wang, Yaqing; Hu, Xingliu; Wang, Fangen; Mu, Tiancheng

doi:10.1021/acs.iecr.9b00867

Cited by 117 publications

(67 citation statements)

References 37 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increasing trend of RI with increasing concentration of MWCNTs is also found in the literature [ 67 ]. The experimental RI data in glyceline and water at room temperature, at different concentrations of MWCNTs and AgMWCNTs, is presented in Figure S8 .…”

Section: Resultssupporting

confidence: 77%

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

et al. 2021

View full text Add to dashboard Cite

A suitable dispersion of carbon materials (e.g., carbon nanotubes (CNTs)) in an appropriate dispersant media, is a prerequisite for many technological applications (e.g., additive purposes, functionalization, mechanical reinforced materials for electrolytes and electrodes for energy storage applications, etc.). Deep eutectic solvents (DES) have been considered as a promising “green” alternative, providing a versatile replacement to volatile organic solvents due to their unique physical-chemical properties, being recognized as low-volatility fluids with great dispersant ability. The present work aims to contribute to appraise the effect of the presence of MWCNTs and Ag-functionalized MWCNTs on the physicochemical properties (viscosity, density, conductivity, surface tension and refractive index) of glyceline (choline chloride and glycerol, 1:2), a Type III DES. To benefit from possible synergetic effects, AgMWCNTs were prepared through pulse reverse electrodeposition of Ag nanoparticles into MWCNTs. Pristine MWCNTs were used as reference material and water as reference dispersant media for comparison purposes. The effect of temperature (20 to 60 °C) and concentration on the physicochemical properties of the carbon dispersions (0.2–1.0 mg cm−3) were assessed. In all assessed physicochemical properties, AgMWCNTs outperformed pristine MWCNTs dispersions. A paradoxical effect was found in the viscosity trend in glyceline media, in which a marked decrease in the viscosity was found for the MWCNTs and AgMWCNTs materials at lower temperatures. All physicochemical parameters were statistically analyzed using a two-way analysis of variance (ANOVA), at a 5% level of significance.

show abstract

Section: Resultssupporting

confidence: 77%

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Surface tension of DES ranged from 30 to 70 N/m. It was reported that mixtures with stronger hydrogen bonds had higher surface tension [27]. In this report the surface tension was measured using KRUSS EasyDyne instrument.…”

Section: Resultsmentioning

confidence: 99%

A study on the physical properties of low melting mixtures and their use as catalysts/solvent in the synthesis of barbiturates

Theresa

Avudaiappan

Shaibuna

et al. 2021

Journal of Heterocyclic Chem

View full text Add to dashboard Cite

In recent years, deep eutectic solvents have become attractive due to their interesting characteristics such as, physicochemical properties, low cost of components, easiness to prepare, low toxicity, bio‐renewability, and biodegradability. In order to make the deep eutectic mixture more cost‐effective and renewable, carbohydrate derivatives were linked with deep eutectic mixtures, since, carbohydrates are the most important and widespread renewable compounds on the earth. In this work, we have used low melting mixtures comprised of carbohydrates to create the reaction media for organic transformations. The physical properties such as density, viscosity, acidity, refractive index, surface tension, solubility, glass transition temperature, thermal stability, solvent polarity, and toxicity of the mixture were studied. Low melting mixtures were used as reaction media and catalysts for the effective synthesis of Barbiturates. The reaction between aldehydes and barbituric acid/thiobarbituric acid, and the reaction between aldehydes, barbituric acid/thiobarbituric acid, and malononitrile/dimedone were performed effectively with good to excellent yields. The recyclability of the catalyst/solvent was also established.

show abstract

“…In all DESs studied to date, surface tension increases with a decrease in temperature and molar salt fraction due to weakening of HBD. Experimental data has been recovered on a significant group of DESs[ 63 , 64 ] and theoretical models have been developed to predict surface tension of them. [ 63 , 65 ] This property has significant effects, for example, on permeability and bubbling, that may be considered in the design of many processes.…”

Section: Physical Properties Of Dessmentioning

confidence: 99%

Deep Eutectic Solvents and Multicomponent Reactions: Two Convergent Items to Green Chemistry Strategies

Calvo‐Flores

Mingorance-Sánchez

2021

ChemistryOpen

View full text Add to dashboard Cite

One of the highlights of green chemistry is the development of techniques and procedures with low environmental impact. In the last years, deep eutectic solvents (DES) have become an important alternative to conventional organic solvents. For a period ionic liquids have provoked remarkable interest, but they have been displaced by DES because they show easier preparation methods, lower prices, many of them are biode-gradable and compatible with biological systems. In addition, they show adjustable physicochemical properties, high thermal stability, low volatility and are compatible with water. In this paper is reviewed the state of the art of the use of DES paying special attention to the role of reaction media in organic synthesis.

show abstract

Surface Tension of 50 Deep Eutectic Solvents: Effect of Hydrogen-Bonding Donors, Hydrogen-Bonding Acceptors, Other Solvents, and Temperature

Cited by 117 publications

References 37 publications

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

A study on the physical properties of low melting mixtures and their use as catalysts/solvent in the synthesis of barbiturates

Deep Eutectic Solvents and Multicomponent Reactions: Two Convergent Items to Green Chemistry Strategies

Contact Info

Product

Resources

About