Summary
The gas separation properties of new aromatic polyoxadiazole (POD) and polytriazole (PT) membranes have been investigated. A wide range of permeability and selectivity was found for polymers with 4,4′-diphenyl-ether unit (POD-DPE and PT-DPE), 4,4′(2,2′-diphenyl)hexafluorisopropane (POD-HF), 1,1′,3-trimethyl-3-phenylindane (POD-PIDA) and 5-tert-butylisophthalic (POD-TBI) units incorporated into the backbone. The differences found in permeability and selectivity, as well as the dual sorption parameters of POD-PIDA and POD-DPE polyoxadiazoles are discussed in terms of their free volume determined by group contribution.
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Sena, M.E., Andrade, C.T. Properties of heteroaromatic polymers for gas separation. Polymer Bulletin 34, 643–648 (1995). https://doi.org/10.1007/BF00423363
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DOI: https://doi.org/10.1007/BF00423363