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    Self-assembly in casting solutions of block copolymer membranes

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    Type
    Article
    Authors
    Marques, Debora S.
    Vainio, Ulla
    Moreno Chaparro, Nicolas cc
    Calo, Victor M. cc
    Bezahd, Ali Reza
    Pitera, Jed W.
    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
    Earth Science and Engineering Program
    Environmental Science and Engineering Program
    Material Science and Engineering Program
    Nanostructured Polymeric Membrane Lab
    Numerical Porous Media SRI Center (NumPor)
    Physical Science and Engineering (PSE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2013
    Permanent link to this record
    http://hdl.handle.net/10754/562500
    
    Metadata
    Show full item record
    Abstract
    Membranes with exceptional pore regularity and high porosity were obtained from block copolymer solutions. We demonstrate by small-angle X-ray scattering that the order which gives rise to the pore morphology is already incipient in the casting solution. Hexagonal order was confirmed in PS-b-P4VP 175k-b-65k solutions in DMF/THF/dioxane with concentrations as high as 24 wt%, while lamellar structures were obtained in more concentrated solutions in DMF or DMF/dioxane. The change in order has been understood with the support of dissipative particle dynamic modeling. © 2013 The Royal Society of Chemistry.
    Citation
    Marques, D. S., Vainio, U., Chaparro, N. M., Calo, V. M., Bezahd, A. R., Pitera, J. W., … Nunes, S. P. (2013). Self-assembly in casting solutions of block copolymer membranes. Soft Matter, 9(23), 5557. doi:10.1039/c3sm27475f
    Sponsors
    We thank the German Synchrotron (DESY) for the beam time. The work was supported by the KAUST Geometric Modeling and Scientific Visualization Collaborative Award, "Visualization and Pore Tuning of Asymmetric Membranes" and KAUST-IBM Program "Simulation of pore formation in membranes by self-assembly". We also thank N. Pradeep and M. Karunakaran for their previous work on this topic and help in the initial stage of membrane preparation.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Soft Matter
    DOI
    10.1039/c3sm27475f
    ae974a485f413a2113503eed53cd6c53
    10.1039/c3sm27475f
    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; Earth Science and Engineering Program; Material Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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