화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.12, No.6, 598-603, December, 2004
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Gas Separation Membranes Containing Re6Se8(MeCN)62+ Cluster-Supported Cobalt-Porphyrin Complexes
Su Mi Park1, Jongok Won1, †, Myung-Jin Lee2, 3, Yong Soo Kang2, Se-Hye Kim4, Youngmee Kim4, and Sung-Jin Kim4
  • 1Department of Applied Chemistry, Sejong University, 98 Gunja, Gwangjin, Seoul 143-747, Korea
  • 2Center for Facilitated Transport Membranes, Korea Institute of Science and Technology, P. O. Box 131, Cheongryang, Seoul 130-650, Korea
  • 3Materials Lab, Samsung Advanced Institute, Korea
  • 4Department of Chemistry, Ewha Womans University, 11-1 Daehyun, Seodaemun, Seoul 120-750, Korea
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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:cellulose nitrate;cobalt porphyrin;facilitated transport;membrane.
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