SEBS triblock copolymer-solvent interaction parameters from inverse gas chromatography measurements |
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| Authors: | G. Ovejero,P. Pé rez,I. Dí az |
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| Affiliation: | a Grupo de Catálisis y Procesos de Separación (CyPS), Departamento de Ingeniería Química, Facultad de C. Químicas, Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain
b Alfonso Cortina Technology Center, REPSOL-YPF, 28933 Móstoles, Madrid, Spain |
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| Abstract: | Solubility parameter and Flory-Huggins polymer-solvent interaction parameter of an SEBS (poly(styrene-b-butene/ethylene-b-styrene) triblock copolymer) rubber, were measured by inverse gas chromatography (IGC) technique. The values obtained indicate that cyclohexane, n-pentane and cyclopentane are the most compatible solvents for this kind of polymers. Results were compared with previous data obtained from intrinsic viscosity measurements; also, an estimation using UNIFAC-FV model was performed showing differences less than 35% in terms of infinite dilution activity coefficient of solvents. |
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| Keywords: | Poly(styrene-b-butene/ethylene-b-styrene) triblock copolymers Inverse gas chromatography Solubility parameter Flory-Huggins parameter |
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