Examination of Polystyrene by Inverse GC: Part 1. Below Glass Transition Temperature |
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| Authors: | Ay?eg��l A?k?n Salih Selman Et?z Demet Topalo?lu Yaz?c? Fatma T��msek |
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| Affiliation: | 1. Department of Chemical Engineering, Faculty of Engineering and Architecture, Eski?ehir Osmangazi University, 26480, Eski?ehir, Turkey
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| Abstract: | The surface properties of polystyrene were investigated by inverse gas chromatography at infinite dilution region. The standard enthalpy (??H 0), entropy (??S 0) and free energy (??G 0) of adsorption were calculated for the adsorption of n-alkanes (n-hexane, n-heptane, n-octane, n-nonane, n-decane) and some polar probes (acetone, ethyl acetate, DCM, chloroform, THF) on polystyrene. Additionally, the dispersive (London) component of the surface free energy (?? S d ), surface Lewis acidity (K A ) and Lewis basicity (K D ) of polystyrene surface were determined. The values obtained for K A and K D by three different methods demonstrate that polystyrene surface has a basic nature. |
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