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Preparation of a nanostructured organoceramic and its reversible interlayer expansion

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Abstract

We described previously the liquid phase synthesis and characterization of a nanostructured composite from an aqueous solution containing organic polymer and inorganic ions [J. Mater. Res. 7, 2599 (1992)]. The nanocomposite, termed an organoceramic, consisted of poly(vinyl alcohol) chains intercalated between the principal layers of a hydrated calcium aluminate ceramic. A key structural feature of the organoceramic is the polymer-induced expansion of the interlayer spacing by approximately 10 Å compared to the unmodified ceramic. In this paper, we describe the synthetic scheme that favors organoceramic formation and prove the existence of intercalated polymer by observation of reversible interlayer expansion and contraction in response to changes in ambient humidity. This property is unique to the organoceramic and is not observed in the unmodified calcium aluminate ceramic.

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Authors and Affiliations

  1. Division of Biological Materials and Department of Biomedical Engineering, Northwestern University, 60611, Chicago, Illinois, USA

    Phillip B. Messersmith

  2. Department of Materials Science and Engineering and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 61801, Urbana, Illinois, USA

    Paul Osenar

  3. Departments of Materials Science and Engineering and Chemistry, Materials Research Laboratory, and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 61801, Urbana, Illinois, USA

    Samuel I. Stupp

Authors
  1. Phillip B. Messersmith
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  2. Paul Osenar
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  3. Samuel I. Stupp
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Messersmith, P.B., Osenar, P. & Stupp, S.I. Preparation of a nanostructured organoceramic and its reversible interlayer expansion. Journal of Materials Research 14, 315–318 (1999). https://doi.org/10.1557/JMR.1999.0044

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  • DOI: https://doi.org/10.1557/JMR.1999.0044

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