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Journal of Chemistry
Volume 2014, Article ID 402325, 7 pages
Research Article

Dispersive Surface Energy and Acid-Base Parameters of Tosylate Functionalized Poly(ethylene glycol) via Inverse Gas Chromatography

Department of Chemistry, Yildiz Technical University, Esenler, 34220 Istanbul, Turkey

Received 8 May 2014; Revised 27 October 2014; Accepted 14 November 2014; Published 25 December 2014

Academic Editor: Carlos Guerrero-Sanchez

Copyright © 2014 Feyza Sesigur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An inverse gas chromatographic (IGC) study of the sorption properties of poly(ethylene glycol) modified with tosylate (PEG-TOS) was presented. PEG-TOS was synthesized via the tosylation of the corresponding poly(ethylene glycol) (PEG) with p-toluenesulfonyl chloride in the basic medium. The synthesized PEG-Tos was characterized by FTIR-ATR and 1HNMR techniques. The retention diagrams of n-hexane, n-heptane, n-octane, n-nonane, n-decane, dichloromethane, chloroform, acetone, tetrahydrofuran, ethyl acetate, and ethanol on the PEG and PEG-Tos were plotted at temperatures in K between 303 and 373 by inverse gas chromatography technique. The dispersive component of the surface-free energy, , of studied adsorbent surface was estimated using retention times of different nonpolar organics in the infinite dilution region. Thermodynamic parameters of adsorption (free energy, , enthalpy, , and entropy, ), dispersive components of the surface energies, , and the acid, , and base, , constants for the PEG and PEG-Tos were calculated and the results were discussed.