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Related Concept Videos

Solvents01:12

Solvents

67.5K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
67.5K
Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

466
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
466
Energetics of Solution Formation02:35

Energetics of Solution Formation

6.9K
The formation of a solution is an example of a spontaneous process, which is a process that occurs under specified conditions without energy from some external source.
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Formation of the solution requires the solute–solute and solvent–solvent...
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Enthalpy of Solution02:39

Enthalpy of Solution

25.4K
There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
25.4K
Chemical and Solubility Equilibria02:21

Chemical and Solubility Equilibria

4.2K
The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if  ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
4.2K
Entropy and Solvation02:05

Entropy and Solvation

7.2K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.2K

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Preparation of Binary and Ternary Deep Eutectic Systems
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A Comparative Study on Mechanochemically and Thermally Prepared Deep Eutectic Solvents.

Oluseyi Olawuyi1, Md Rakibul Hasan2, Tomasz Kruczyński1

  • 1Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144, United States.

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|June 16, 2025
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Summary
This summary is machine-generated.

Mechanochemistry offers a greener alternative for preparing deep eutectic solvents (DESs) without heating, reducing energy use and byproduct formation. This solvent preparation method shows significant advantages for industrial applications.

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Area of Science:

  • Green Chemistry
  • Materials Science
  • Physical Chemistry

Background:

  • Traditional deep eutectic solvents (DESs) are often prepared using thermal methods, which can lead to energy inefficiency and potential byproduct formation.
  • Mechanochemistry provides a solvent-free, ambient-condition alternative for synthesizing DESs, utilizing mechanical energy for component dissolution.

Purpose of the Study:

  • To compare the efficacy of mechanochemical preparation versus traditional thermal methods for deep eutectic solvents (DESs).
  • To evaluate the physical, spectroscopic, and thermal properties of DESs prepared by both techniques.
  • To assess the advantages of mechanochemical DES synthesis for industrial scalability and green chemistry initiatives.

Main Methods:

  • Preparation of three classes of DESs using both thermal and mechanochemical (rotary tumbler ball milling) techniques.
  • Analysis of DESs using Fourier-transform infrared spectroscopy (FT-IR), 1H Nuclear Magnetic Resonance (1H NMR), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA).
  • Physical property measurements and Principal Component Analysis (PCA) of spectroscopic data.

Main Results:

  • Both thermal and mechanochemical methods successfully produced DESs, confirmed by spectroscopic analysis (FT-IR, 1H NMR) with no significant impurities detected.
  • PCA of FTIR spectra indicated comparable results between the two preparation methods for all DESs.
  • Mechanochemical ball milling demonstrated clear advantages in energy efficiency, operational time, safety, functionality, and economic viability compared to thermal methods.

Conclusions:

  • Mechanochemical preparation of DESs is a highly advantageous, energy-efficient, and scalable alternative to traditional thermal methods.
  • This solvent-free approach minimizes byproduct formation and enhances the functionality and industrial feasibility of DES production.
  • The mechanochemical method aligns with industry demands for sustainable and green solvent processes.