SEBS triblock copolymer–solvent interaction parameters from inverse gas chromatography measurements

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.