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    Mixed-Penetrant Sorption in Ultra-Thin Films of Polymer of Intrinsic Microporosity PIM-1

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    acs.jpcb.7b10061.pdf
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    Description:
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    Type
    Article
    Authors
    Ogieglo, Wojciech
    Furchner, Andreas
    Ghanem, Bader cc
    Ma, Xiaohua
    Pinnau, Ingo cc
    Wessling, Matthias
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2015-SEED-2445-01
    Date
    2017-10-24
    Online Publication Date
    2017-10-24
    Print Publication Date
    2017-11-02
    Permanent link to this record
    http://hdl.handle.net/10754/625906
    
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    Abstract
    Mixed penetrant sorption into ultra-thin films of a super-glassy polymer of intrinsic microporosity (PIM-1) was studied for the first time by using interference-enhanced in-situ spectroscopic ellipsometry. PIM-1 swelling and the concurrent changes in its refractive index were determined in ultra-thin (12 - 14 nm) films exposed to pure and mixed penetrants. The penetrants included water, n-hexane and ethanol and were chosen based on their significantly different penetrant-penetrant and penetrant-polymer affinities. This allowed studying microporous polymer responses at diverse ternary compositions and revealed effects such as competition for the sorption sites (for water / n-hexane or ethanol / n-hexane) or enhancement in sorption of typically weakly sorbing water in the presence of more highly sorbing ethanol. The results reveal details of the mutual sorption effects which often complicate comprehension of glassy polymers' behavior in applications such as high-performance membranes, adsorbents or catalysts. Mixed-penetrant effects are typically very challenging to study directly and their understanding is necessary owing to a broadly recognized inadequacy of simple extrapolations from measurements in pure component environment.
    Citation
    Ogieglo W, Furchner A, Ghanem BS, Ma X-H, Pinnau I, et al. (2017) Mixed-Penetrant Sorption in Ultra-Thin Films of Polymer of Intrinsic Microporosity PIM-1. The Journal of Physical Chemistry B. Available: http://dx.doi.org/10.1021/acs.jpcb.7b10061.
    Sponsors
    This publication is based upon work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. SEED Fund OSR-2015-SEED-2445-01.
    Publisher
    American Chemical Society (ACS)
    Journal
    The Journal of Physical Chemistry B
    DOI
    10.1021/acs.jpcb.7b10061
    PubMed ID
    29023118
    Additional Links
    http://pubs.acs.org/doi/abs/10.1021/acs.jpcb.7b10061
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.jpcb.7b10061
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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