Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 25 October 2024 / Approved: 27 October 2024 / Online: 28 October 2024 (12:21:29 CET)

How to cite: Hamieh, T. New Advances on the Dispersive and Polar Surface Properties of Poly(styrene-co-butadiene) using Inverse Gas Chromatography. Preprints 2024, 2024102107. https://doi.org/10.20944/preprints202410.2107.v1 Hamieh, T. New Advances on the Dispersive and Polar Surface Properties of Poly(styrene-co-butadiene) using Inverse Gas Chromatography. Preprints 2024, 2024102107. https://doi.org/10.20944/preprints202410.2107.v1

Abstract

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 the 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 of the London dispersive surface energy and the polar Lewis acid-base surface energies of SBR was highlighted when the temperature increased. It was showed a Lewis amphoteric character of poly(styrene-co-butadiene) with a highest basic constant 10 times larger than its acidic constant.

Keywords

Retention volume; adsorption; organic solvents; Hamieh thermal model; London dispersive interaction energy; deformation polarizability; Dispersive and polar surface energy; Lewis’s acid–base constants; molecular separation distance

Subject

Chemistry and Materials Science, Materials Science and Technology

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