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

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

CHROMATOGRAPHIA, cilt.73, ss.109-115, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s10337-010-1829-x
  • Dergi Adı: CHROMATOGRAPHIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.109-115
  • Anahtar Kelimeler: Inverse gas chromatography, Adsorption thermodynamic parameters, Acid/base surface characteristics, Surface energy, Polystyrene, GAS-SOLID CHROMATOGRAPHY, ZERO SURFACE COVERAGE, ENERGY VARIATIONS, ADSORPTION, FIBERS
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

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.