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CO2-philic polyether-block-amide/glycerol triacetate blend membranes: gas-permeation performance, thermal stability, and storage stability

  • Feng, Shichao
  • Ren, Jizhong
  • Zhao, Dan
  • Li, Hui
  • Hua, Kaisheng
  • Li, Xinxue
  • Deng, Maicun
Publication Date
Jun 15, 2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Polyether-block-amide (Pebax)/glycerol triacetate (GTA) blend membranes with various compositions were prepared with a solution-casting method. The gas-separation performance, thermal stability, and storage stability of the prepared membranes were investigated at different pressures and temperatures. The Arrhenius equation was used to describe the gas-permeation performance of the Pebax1074/GTA membranes with a low GTA concentration (<= 40 wt %) rather than those membranes with a high GTA concentration (>40 wt %). A higher GTA content, lower treatment temperature, and storage temperature increased the gas permeability and induced a stronger hydrostatic pressure effect. The low-storage temperature was beneficial for fixing GTA on the blend membrane. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47620.

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