Inorganic–organic nanocomposites based on sol–gel derived magnesium fluoride
- 11 October 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Nanoscale
- Vol. 3 (11), 4774-4779
- https://doi.org/10.1039/c1nr10843c
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.This publication has 23 references indexed in Scilit:
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