Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Gas Separation Membranes Containing $Re_6Se_8(MeCN)_6^{2+}$ Cluster-Supported Cobalt-Porphyrin Complexes

  • Park Su Mi (Department of Applied Chemistry, Sejong University) ;
  • Won Jongok (Department of Applied Chemistry, Sejong University) ;
  • Lee Myung-Jin (Center for Facilitated Transport Membranes, Korea Institute of Science and Technology) ;
  • Kang Yong Soo (Center for Facilitated Transport Membranes, Korea Institute of Science and Technology) ;
  • Kim Se-Hye (Department of Chemistry, Ewha Wommans University) ;
  • Kim Youngmee (Department of Chemistry, Ewha Wommans University) ;
  • Kim Sung-Jin (Department of Chemistry, Ewha Wommans University)
  • Published : 2004.12.01
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Abstract

Cellulose nitrate (CN) composite membranes, containing cobalt porphyrin (CoP) complexes self-assembled within nanometer-sized rhenium clusters (ReCoP), have been prepared and their oxygen and nitrogen gas perme­abilities were analyzed. The solubility of ReCoP and the characteristics of the corresponding composite membranes were analyzed using a Cahn microbalance, FT-IR spectroscopy, wide-angle X-ray scattering, and differential scanning calorimetry. The nitrogen permeability through the CN composite membranes decreased upon addition of ReCoP and CoP, which implies that the presence of these oxygen carrier complexes affects the structure of the polymer matrix. The oxygen permeability through the composite membranes containing small quantities of ReCoP decreased, but it increased upon increasing the concentration. The oxygen gas transport was affected by the matrix at low ReCoP concentrations, but higher concentrations of ReCoP increased the oxygen permeability as a result of its reversible and specific interactions with oxygen, effectively realizing ReCoP carrier-mediated oxygen transport.

Keywords

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