Examination of Polystyrene by Inverse GC: Part 1. Below Glass Transition Temperature

Askin A., Etoz S. S., TOPALOĞLU YAZICI D., Tumsek F.

CHROMATOGRAPHIA, vol.73, pp.109-115, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73
  • Publication Date: 2011
  • Doi Number: 10.1007/s10337-010-1829-x
  • Journal Name: CHROMATOGRAPHIA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.109-115
  • Keywords: Inverse gas chromatography, Adsorption thermodynamic parameters, Acid/base surface characteristics, Surface energy, Polystyrene, GAS-SOLID CHROMATOGRAPHY, ZERO SURFACE COVERAGE, ENERGY VARIATIONS, ADSORPTION, FIBERS
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

The surface properties of polystyrene were investigated by inverse gas chromatography at infinite dilution region. The standard enthalpy (Delta H (0)), entropy (Delta S (0)) and free energy (Delta 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 (gamma (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.