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    Ionic Liquids As Self-Assembly Guide for the Formation of Nanostructured Block Copolymer Membranes

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    Type
    Article
    Authors
    Madhavan, Poornima cc
    Sougrat, Rachid cc
    Behzad, Ali Reza
    Peinemann, Klaus-Viktor cc
    Nunes, Suzana Pereira cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Engineering Program
    Electron Microscopy
    Environmental Science and Engineering Program
    Imaging and Characterization Core Lab
    Nanostructured Polymeric Membrane Lab
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2015-05-02
    Online Publication Date
    2015-05-02
    Print Publication Date
    2015-10
    Permanent link to this record
    http://hdl.handle.net/10754/552119
    
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    Abstract
    Nanostructured block copolymer membranes were manufactured by water induced phase inversion, using ionic liquids (ILs) as cosolvents. The effect of ionic liquids on the morphology was investigated, by using polystyrene-b-poly(4-vinyl pyridine) (PS-b-PV4P) diblock as membrane copolymer matrix and imidazolium and pyridinium based ILs. The effect of IL concentration and chemical composition was evident with particular interaction with P4VP blocks. The order of block copolymer/ILs solutions previous to the membrane casting was confirmed by cryo scanning electron microscopy and the morphologies of the manufactured nanostructured membranes were characterized by transmission and scanning electron microscopy. Non-protic ionic liquids facilitate the formation of hexagonal nanoporous block copolymer structure, while protic ILs led to a lamella-structured membrane. The rheology of the IL/block copolymer solutions was investigated, evaluating the storage and loss moduli. Most membranes prepared with ionic liquid had higher water flux than pure block copolymer membranes without additives.
    Citation
    Ionic Liquids As Self-Assembly Guide for the Formation of Nanostructured Block Copolymer Membranes 2015 Journal of Membrane Science
    Publisher
    Elsevier BV
    Journal
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2015.04.036
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S0376738815003671
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.memsci.2015.04.036
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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