作者: Mariolino Carta , Paola Bernardo , Gabriele Clarizia , Johannes C. Jansen , Neil B. McKeown
DOI: 10.1021/MA501925J
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摘要: The synthesis and characterization of a series novel hexaphenylbenzene (HPB) based polymers intrinsic microporosity (PIM-HPBs) containing methyl, bromine, nitrile substituents are reported. successful formation thin films from these allowed the evaluation influence on gas permeability. Analysis by time-lag method also yielded information about diffusion coefficients and, indirectly, solubility. permeability varies as function polarity shows significant increase after treatment samples with methanol, especially for cast THF solvent. This enhancement, which is mostly due to an in coefficient, only partially lost upon aging membranes 5 months. Measurements at different feed pressures confirm typical dual mode sorption behavior, increasing diffusivity decreasing solubility fun...