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    Synergic Swelling of Interactive Network Support and Block Copolymer Films during Solvent Vapor Annealing

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    Type
    Article
    Authors
    Ogieglo, Wojciech
    Stenbock-Fermor, Anja
    Juraschek, Thomas M.
    Bogdanova, Yulia
    Benes, Nieck cc
    Tsarkova, Larisa A. cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Physical Science and Engineering (PSE) Division
    Date
    2018-08-28
    Embargo End Date
    2019-08-28
    Submitted Date
    2018-08-09
    Permanent link to this record
    http://hdl.handle.net/10754/670052
    
    Metadata
    Show full item record
    Abstract
    We report the effect of “interactive” polymer network (PN) supports on the solvent-vapor processing of thin polymer films. Densely cross-linked surface-attached network exhibits under experimental time scale a glassy swelling behavior with the conformational states and solvent-uptake clearly sensitive to the degree of solvent vapor saturation in the atmosphere. Pretreatment of the thermally cured PN films by complete immersion or by swelling in saturated chloroform vapors facilitates relaxation of the residual stresses and induces irreversible changes to the network structure as revealed by the swelling/deswelling tests. The presence of a polymer film on top of the PN support results in a mutual influence of the layers on the respective swelling kinetics, steady-state solvent uptake, and chain dynamics. Using UV–vis ellipsometry, we revealed a significantly faster swelling and higher solvent uptake of glassy PN layer below a polymer film as compared to a single PN layer on silicon substrate. Remarkably, the swelling of the network support continues to increase even when the overall swelling of the bilayer is in a steady-state regime. Block copolymer films on PN supports exhibit a faster ordering dynamics and exceptional stability toward dewetting as compared to similar films on silicon wafers. The mechanical stress produced by continuously swelling PN is suggested to account for the enhanced segmental dynamics even at low solvent concentration in the block copolymer film. Apart from novel insights into dynamics of solvent uptake by heterogeneous polymer films, these results might be useful in developing novel approaches toward fast-processing/annealing of functional polymer films and fibers.
    Citation
    Ogieglo, W., Stenbock-Fermor, A., Juraschek, T. M., Bogdanova, Y., Benes, N., & Tsarkova, L. A. (2018). Synergic Swelling of Interactive Network Support and Block Copolymer Films during Solvent Vapor Annealing. Langmuir, 34(34), 9950–9960. doi:10.1021/acs.langmuir.8b02304
    Sponsors
    L.A.T. and Y.B. acknowledge the financial support by the Russian Foundation for Basic Research (RFBR) according to the research project no. 18-53-76005 in the framework of the ERA.Net Plus Project JetVA.
    Publisher
    American Chemical Society (ACS)
    Journal
    LANGMUIR
    DOI
    10.1021/acs.langmuir.8b02304
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.langmuir.8b02304
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.langmuir.8b02304
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division

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