Capillary column inverse gas chromatography to determine the thermodynamic parameters of binary solvent poly (styrene-block-butadiene) rubber systems

Benguergoura, Hassiba; Allel, Amina; Saeed, Waseem Sharaf; Aouak, Taı̈eb

doi:10.1016/j.arabjc.2021.103040

Cited by 3 publications

(1 citation statement)

References 59 publications

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“…The γ 12 ∞ is a powerful property that can be used to perform a rough evaluation of the extractant (such as ILs, DESs, or any other solvent) in the industrial extraction processes. , Moreover, the γ 12 ∞ can provide the information on molecular interactions between DES and solute. Among the existing techniques for measurement of γ 12 ∞ values, inverse gas chromatography (IGC) is an effective technique that uses organic solvent as a probe to analyze the properties of solid phase support . The investigated material as stationary phase is packed into the column of the IGC system, and information on its thermodynamic properties can be obtained over a wide temperature range.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Properties and Activity Coefficients at Infinite Dilution for Various Solutes in Deep Eutectic Solvent: Tetraethylammonium Chloride + Glycerol

Yang,

Yalikun,

Nie

2023

J. Chem. Eng. Data

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Activity coefficient at infinite dilution (γ12 ∞) for 30 different organic probes in deep eutectic solvents [(DES, tetraethylammonium chloride + glycerol) with a molar ratio of 1.000:2.001 was determined by inverse gas chromatography method at T = 313.15–343.15 K. Then, the excess thermodynamic properties at infinite dilution (ΔH 1 E,∞, ΔS 1 E,∞ and ΔG 1 E,∞) were calculated to further analyze the intermolecular interactions. The extraction capacity of the studied DES for three industrial separation systems including n-heptane/toluene, n-heptane/thiophene, and acetone/ethanol was determined based on the values of separation parameters S ij ∞ and k j ∞. The Hildebrand solubility parameters of the investigated DES were also obtained by regular solution theory combined with Flory “combinatorial” equation. The results showed that the solubility parameter did not change significantly in the studied temperature range.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Properties and Activity Coefficients at Infinite Dilution for Various Solutes in Deep Eutectic Solvent: Tetraethylammonium Chloride + Glycerol

Yang,

Yalikun,

Nie

2023

J. Chem. Eng. Data

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Diffusion of organic solvents in thermoplastic elastomers: infinite dilution experiments

Aşkın,

Altınbaş,

Giacinti Baschetti

2024

Polym. Bull.

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New Advances on the Dispersive and Polar Surface Properties of Poly(styrene-co-butadiene) Using Inverse Gas Chromatography

Hamieh

2024

Polymers

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The dispersive and polar properties of materials, and especially of polymers and copolymers, play an important role in several engineering applications implying their surfaces and interfaces. The surface energetic properties of poly(styrene-co-butadiene) have never been studied. We proposed in this study an accurate determination of such properties by using inverse gas chromatography (IGC) at infinite dilution. Background: The IGC surface technique led to the dispersive and polar properties of poly(styrene-co-butadiene) rubber (SBR) by adsorption of organic solvents at various temperatures. Methods: Our new methodology, based on the thermal Hamieh model and the London dispersion interaction energy, was used to determine the London dispersion surface energy, the polar acid–base surface energy, and the Lewis acid–base properties of the copolymer. Results: The different surface energy parameters of the SBR were obtained as a function of temperature from the chromatographic measurements. Conclusions: The dispersive and polar free energies of adsorption of the various n-alkanes and polar molecules on poly(styrene-co-butadiene) were determined at different temperatures. A decrease in the London dispersive surface energy and the polar Lewis acid–base surface energies of SBR was highlighted when the temperature increased. It showed a Lewis amphoteric character of poly(styrene-co-butadiene) with a highest basic constant 10 times larger than its acidic constant. This new and original method can better characterize the surface thermodynamic properties of poly(styrene-co-butadiene).

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Capillary column inverse gas chromatography to determine the thermodynamic parameters of binary solvent poly (styrene-block-butadiene) rubber systems

Cited by 3 publications

References 59 publications

Thermodynamic Properties and Activity Coefficients at Infinite Dilution for Various Solutes in Deep Eutectic Solvent: Tetraethylammonium Chloride + Glycerol

Thermodynamic Properties and Activity Coefficients at Infinite Dilution for Various Solutes in Deep Eutectic Solvent: Tetraethylammonium Chloride + Glycerol

Diffusion of organic solvents in thermoplastic elastomers: infinite dilution experiments

New Advances on the Dispersive and Polar Surface Properties of Poly(styrene-co-butadiene) Using Inverse Gas Chromatography

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