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FEYZA SESIGUR1, DOLUNAY SAKAR DASDAN1,* , OZLEM YAZICI1, FATIH CAKAR1, OZLEM CANKURTARAN1, FERDANE KARAMAN1
Tosylate functionalized poly(ethylene glycol) (PEG-Tos) which was synthesized via the tosylation of the corresponding poly(ethylene glycol) (PEG) with p-toluenesulfonyl chloride was thermodynamically characterized at temperatures in K between 303 and 373 by inverse gas chromatography technique (IGC). The retention diagrams of n-hexane, n-heptane, noctane, n-nonane, n-decane, dichloromethane, chloroform, acetone, tetrahydrofuran, ethyl acetate and ethanol on the PEG and PEG-Tos were plotted between these temperature ranges. Some polymer-solvent thermodynamic interaction parameters, such as weight fraction activity coefficient, 1 , Flory-Huggins polymer-solvent interaction parameters, 12 χ were determined for studied solvents at infinite dilution of PEG and PEG-Tos at temperatures above mentioned. Then, the partial molar heat of sorption, s H1 , the partial molar heat of mixing at infinite dilution, 1 H and as well as the molar heat of vaporizations of solvents, v H were determined. In addition, the solubility parameter of PEG and PEG-Tos 2 was determined at room temperature by extrapolation of the values of solubility parameters from studied temperatures to 298 K. (Received July 23, 2014; accepted February 10, 2016).
Poly (ethylene glycol), p-toluenesulfonyl poly(ethylene glycol), Inverse gas chromatography, Polymer-solvent interactions, Solubility parameter.
FEYZA SESIGUR, DOLUNAY SAKAR DASDAN, OZLEM YAZICI, FATIH CAKAR, OZLEM CANKURTARAN, FERDANE KARAMAN, Thermodynamical characterization of poly (ethylene glycol) and tosylate functionalized poly(ethylene glycol) interaction with some nonpolar and polar solvents via inverse gas chromatography, Optoelectronics and Advanced Materials - Rapid Communications, 10, 1-2, January-February 2016, pp.97-101 (2016).
Submitted at: July 23, 2014
Accepted at: Feb. 10, 2016
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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