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Frozen Cyclohexane-in-Water Emulsion as a Sacrificial Template for the Synthesis of Multilayered Polyelectrolyte Microcapsules

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    Frozen Cyclohexane-in-Water Emulsion as a Sacrificial Template for the Synthesis of Multilayered Polyelectrolyte Microcapsules
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    † Center for Co-operative Bioactive Systems
    ‡ Department of Chemical and Biological Engineering
    § Department of Chemical and Biological Sciences
    # Department of Mechanical and Aerospace Engineering
    Polytechnic Institute of New York University (NYU-POLY), 6 Metrotech Center, Brooklyn, New York 11201
    *Corresponding author (e-mail: [email protected]).
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    Langmuir

    Cite this: Langmuir 2009, 25, 17, 9728–9733
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    https://doi.org/10.1021/la901020j
    Published June 9, 2009
    Copyright © 2009 American Chemical Society
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    Abstract

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    This paper reports the application of frozen cyclohexane-in-water emulsions as sacrificial templates for the fabrication of hollow microcapsules through layer-by-layer assembly of polyelectrolytes, poly(styrenesulfonate sodium salt), and poly(allylamine hydrochloride). Extraction of the cyclohexane phase from frozen emulsions stabilized with 11 polyelectrolyte layers by compatibilization with 30% v/v ethanol leads to the formation of water-filled microcapsules while preserving the spherical geometry. The majority of microcapsules (>90%) are prepared with intact polyelectrolyte membranes as measured by their deformation induced by osmotic pressure. This work provides a new route for the synthesis of hollow multilayered microcapsules under mild operating conditions.

    Copyright © 2009 American Chemical Society

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    This article is cited by 17 publications.

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    Langmuir

    Cite this: Langmuir 2009, 25, 17, 9728–9733
    Click to copy citationCitation copied!
    https://doi.org/10.1021/la901020j
    Published June 9, 2009
    Copyright © 2009 American Chemical Society
    Request reuse permissions

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