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    Topology and shape control for assemblies of block copolymer blends in solution

    Access Status
    Fulltext not available
    Authors
    Moreno, N.
    Nunes, S.
    Peinemann, K.
    Calo, Victor
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Moreno, N. and Nunes, S. and Peinemann, K. and Calo, V. 2015. Topology and shape control for assemblies of block copolymer blends in solution. Macromolecules. 48 (21): pp. 8036-8044.
    Source Title
    Macromolecules
    DOI
    10.1021/acs.macromol.5b01891
    ISSN
    0024-9297
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/51527
    Collection
    • Curtin Research Publications
    Abstract

    We study binary blends of asymmetric diblock copolymers (AB/AC) in selective solvents with a mesoscale model. We investigate the morphological transitions induced by the concentration of the AC block copolymer and the difference in molecular weight between the AB and AC copolymers, when segments B and C exhibit hydrogen-bonding interactions. To the best of our knowledge, this is the first work modeling mixtures of block copolymers with large differences in molecular weight. The coassembly mechanism localizes the AC molecules at the interface of A and B domains and induces the swelling of the B-rich domains. The coil size of the large molecular weight block copolymer depends only on the concentration of the short block copolymer (AC or AB), regardless of the B-C interactions. However, the B-C interactions control the morphological transitions that occur in these blends.

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