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    Rapid fabrication of fluorinated covalent organic polymer membranes for organic solvent nanofiltration

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    Embargo End Date:
    2024-02-01
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    Type
    Article
    Authors
    Alduraiei, Fadhilah H. cc
    Kumar, Sushil cc
    Liu, Jiangtao cc
    Nunes, Suzana Pereira cc
    Szekely, Gyorgy cc
    KAUST Department
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Advanced Membranes and Porous Materials Research Center
    Biological and Environmental Science and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Chemical Engineering Program
    Date
    2022-02
    Embargo End Date
    2024-02-01
    Submitted Date
    2021-12-19
    Permanent link to this record
    http://hdl.handle.net/10754/675372
    
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    Abstract
    Covalent organic polymers (COPs) are prepared via the non-uniform covalent assembly of organic building blocks, endowing their structures with permanent pores, thereby rendering them suitable for diverse applications. The use of COPs in the fabrication of composite membranes can enhance their permeability, selectivity, and chemical stability. However, the existing COP synthesis processes are typically tedious, thus necessitating the development of rapid and simpler routes. We demonstrate an easily performed synthesis route for the rapid (less than 10 s) fabrication of COP-based composite membranes via interfacial polymerization. The membranes were directly prepared on a polyacrylonitrile substrate without transferring the COP layer onto a porous support. The hydrophobicity of the membranes was achieved by the integration of fluorine-rich groups along the polymer backbone. The obtained solvent-resistant composite membranes exhibited a toluene permeance of 11 L m$^{−2} $h$^{−1}$ bar$^{−1}$ and congo red (687 g mol$^{−1}$) rejection levels of more than 95%. The remarkable performance, crosslinked polymer structure, and manufacturing scalability of the fabricated thin films make them attractive as solvent-resistant nanofiltration membranes.
    Citation
    Alduraiei, Kumar, S., Liu, J., Nunes, S. P., & Szekely, G. (2022). Rapid fabrication of fluorinated covalent organic polymer membranes for organic solvent nanofiltration. Journal of Membrane Science, 120345. https://doi.org/10.1016/j.memsci.2022.120345
    Sponsors
    This study was funded by the King Abdullah University of Science and Technology (KAUST). We appreciate the support from the KAUST Core Laboratories for the SS-NMR, XPS, and AFM measurements. Fadhilah Alduraiei would like to thank Saudi Aramco for providing her PhD scholarship.
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2022.120345
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0376738822000928
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2022.120345
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Environmental Science and Engineering Program; Physical Science and Engineering (PSE) Division; Chemical Science Program; Chemical Engineering Program

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