Ordered ferrofluidic assemblies in polymer film formed by magnetically induced polymer-solvent phase separation

ORAL

Abstract

Tri-block copolymer has been used as nonferrofluid to generate permanent magnetic structures with controlled dimension and architecture in a partially miscible ferrofluid-nonferrofluid mixture under the influence of a perpendicular magnetic field. The nature of the resultant assemblies was strongly dependent on the magnetic field and concentration of ferro/nonferrofluidic systems. These ordered cluster assemblies in a polymer film that can be used either directly, in applications such as membrane, or subsequently as a template for the formation of other nanostructured materials. The origin of the permanent structures, which have characteristic lateral dimensions ranging from 5 $\mu$m to submicron range, is the repartitioning of the ferrofluid carrier solvent into the nonferrofluid polymeric phase.

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Authors

  • Nataraj Sanna Kotrappanavar

    • Cambridge University
    • Univeristy of Cambridge
    • University of Cambridge
    • Biological and Soft Sciences Sector, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

  • Myunghwan Byun

    • Biological and Soft Sciences Sector, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

  • Paul Zaval-Reviera

    • Cambridge University
    • University of Cambridge
    • Biological and Soft Sciences Sector, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

  • Kevin Chonnon

    • Biological and Soft Sciences Sector, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

  • Shaheen S.A. Al-Muhtaseb

    • Qatar University
    • Qatar Univeristy
    • Department of Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar

  • Easan Sivaniah

    • Cambridge University
    • University of Cambridge
    • Biological and Soft Sciences Sector, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK