Effect of temperature on gas permeation of polymer blends. I. Poly(ethylene oxide)/copolyester–polyurethane

Authors

  • Guo Qipeng,

    Corresponding author
    1. Department of Applied Chemistry, University of Science and Technology of China, Hefei, People's Republic of China
    Current affiliation:
    1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022, People's Republic of China
    • Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022, People's Republic of China
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  • Xu Hechang,

    1. Department of Applied Chemistry, University of Science and Technology of China, Hefei, People's Republic of China
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    • Department of Polymer Science, Beijing Institute of Chemical Technology, Beijing, People's Republic of China.

  • Ma Dezhu

    1. Department of Applied Chemistry, University of Science and Technology of China, Hefei, People's Republic of China
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Abstract

The transport behavior of H2, N2, and CO2, was studied for blends of poly(ethylene oxide) (PEO) with a copolyester–polyurethane (PU) at various temperatures from 20 to 80°C. It was found that there was an abrupt change in slope or discontinuity around the melting point of PEO in Arrhenius plot of the permeability vs. temperature. The relationships between the logarithms of gas permeability and blend composition were strongly dependent on the temperature and showed very different shapes at temperature below and above the melting point of PEO. The activation energy of gas permeation for the blends had different values below and above the melting temperature of PEO.

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