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Issue 11, 2011
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Inorganic–organic nanocomposites based on sol–gel derived magnesium fluoride

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Abstract

Monodispersed magnesium fluoride nanoparticles are utilized for the first time to prepare transparent inorganic–organic nanocomposite materials with improved mechanical properties. The fluorolytic sol–gel synthesis route has been modified for the preparation of monodispersed magnesium fluoride nanoparticles with a size of 2–3 nm. MgF2 particles are effectively stabilised against agglomeration by phosphonic acids, which strongly bind to the particles and lead to an increased compatibility of the inorganic particles with the organic polymers. This way, highly transparent nanocomposite materials with up to 20 wt% magnesium fluoride in different acrylates are obtained, featuring high dispersion of MgF2 particles in the polymer matrix and an increased hardness by the factor of 2. The nature of interaction between phosphonic acids and magnesium fluoride is thoroughly investigated by IR and NMR showing a monodentate coordination of phosphonates to the particle's surface.

Graphical abstract: Inorganic–organic nanocomposites based on sol–gel derived magnesium fluoride

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Publication details

The article was received on 15 Jul 2011, accepted on 05 Sep 2011 and first published on 11 Oct 2011


Article type: Paper
DOI: 10.1039/C1NR10843C
Citation: Nanoscale, 2011,3, 4774-4779
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    Inorganic–organic nanocomposites based on sol–gel derived magnesium fluoride

    J. Noack, L. Schmidt, H. Gläsel, M. Bauer and E. Kemnitz, Nanoscale, 2011, 3, 4774
    DOI: 10.1039/C1NR10843C

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