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    Crosslinked polytriazole membranes for organophilic filtration

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    Type
    Article
    Authors
    Chisca, Stefan
    Falca, Gheorghe
    Musteata, Valentina-Elena
    Boi, Cristiana
    Nunes, Suzana Pereira cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2016-12-30
    Online Publication Date
    2016-12-30
    Print Publication Date
    2017-04
    Permanent link to this record
    http://hdl.handle.net/10754/622619
    
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    Abstract
    We report the preparation of crosslinked membranes for organophilic filtration, by reacting a new polytriazole with free OH groups, using non-toxic poly (ethylene glycol) diglycidyl ether (PEGDE). The OH-functionalized polymer was obtained by converting the oxadiazole to triazole rings with high yield (98%). The maximum degree of crosslinking is achieved after 6 h of reaction. The crosslinked polytriazole membranes are stable in a wide range of organic solvents and show high creep recovery, indicating the robustness of crosslinked membranes. The influence of different casting solutions and different crosslinking time on the membrane morphology and membrane performance was investigated. The membranes performance was studied in dimethylformamide (DMF) and (tetrahydrofuran) THF. We achieved a permeance for THF of 49 L m−2 h−1 bar−1 for membranes with molecular weight cut off (MWCO) of 7 kg mol−1 and a permeance for THF of 17.5 L m−2 h−1 bar−1 for membranes with MWCO of 3 kg mol−1. Our data indicate that by using the new polytriazole is possible to adjust the pore dimensions of the membranes to have a MWCO, which covers ultra- and nanofiltration range.
    Citation
    Chisca S, Falca G, Musteata VE, Boi C, Nunes SP (2016) Crosslinked polytriazole membranes for organophilic filtration. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.12.060.
    Sponsors
    This research was supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2016.12.060
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S0376738816319524
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2016.12.060
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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