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    In-situ Non-Invasive Imaging of Liquid-Immersed Thin Film Composite Membranes

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    Type
    Article
    Authors
    Ogieglo, Wojciech
    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
    2017-10-14
    Online Publication Date
    2017-10-14
    Print Publication Date
    2018-01
    Permanent link to this record
    http://hdl.handle.net/10754/625892
    
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    Abstract
    We present a non-invasive method to directly image liquid-immersed thin film composite membranes. The approach allows accessing information not only on the lateral distribution of the coating thickness, including variations in its swelling and density, but also on the distribution of substrate porosity, roughness, accessibility of pores to liquid, and even the degree of pore intrusion related to the thin layer deposition process. The method can be particularly helpful in the fields of functional coatings or membranes to allow laterally-resolved studies under realistic application conditions thereby opening completely new research avenues. The approach is demonstrated in a study of two polymers of intrinsic microporosity, PIM-1 and PIM-6FDA-OH, coated on polyacrylonitrile support and immersed in water. Variations of the skin morphology using different coating methods (floating, spin-coating and dip-coating) are evaluated with the help of the presented method. Surfaces of at least tens of cm2 can be potentially analyzed.
    Citation
    Ogieglo W, Pinnau I, Wessling M (2017) In-situ Non-Invasive Imaging of Liquid-Immersed Thin Film Composite Membranes. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2017.10.027.
    Sponsors
    The authors gratefully acknowledge the help of John Linkhorst (AVT at RWTH Aachen) with the construction of customized equipment, Karin Faensen (AVT at RWTH Aachen) for the SEM analysis, and Marcel van Dongen (DWI Leibniz Institute for Interactive Materials in Aachen) for the AFM analysis. 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
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2017.10.027
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0376738817321555
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2017.10.027
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program

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