Volume 217, Issue 5 pp. 672-682
Full Paper

The Synthesis of Poly(ethylene glycol) (PEG) Containing Polymers via Step-Growth Click Coupling Reaction for CO2 Separation

Bahadir N. Gacal

Bahadir N. Gacal

Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, Geesthacht, 21502 Germany

Present address: School of Chemistry and Chemical Biology, University College Dublin (UCD), Belfield, Dublin 4, Ireland

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Volkan Filiz

Volkan Filiz

Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, Geesthacht, 21502 Germany

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Volker Abetz

Corresponding Author

Volker Abetz

Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, Geesthacht, 21502 Germany

Institute of Physical Chemistry University of Hamburg, Martin-Luther-King Platz 6, Hamburg, 20146 Germany

E-mail: [email protected]Search for more papers by this author
First published: 22 December 2015
Citations: 18

Abstract

The synthesis of step-growth polymers via a step-growth click coupling reaction of diazides based on poly(ethylene glycol) (PEG) and dialkynes based on aromatics is reported. The polymers are characterized by proton nuclear magnetic resonance spectroscopy (1H-NMR), carbon-13 nuclear magnetic resonance spectroscopy (13C-NMR), Fourier transform infrared spectroscopy (FT-IR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). Gas transport properties of one polymer are measured by the time lag (constant volume, variable pressure) method. Low gas permeabilities are a consequence of the rather high glass transition temperature. The rather high selectivities in separation of CO2/N2 and CO2/CH4 result from the CO2-philic groups such as PEG, triazole, and benzoxazine. According to the gas permeation measurements, the membrane is stable in the temperature range from 30 to 90 °C.

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