Where inorganic meets organic in the glassy state: Hybrid glasses and dental cements
G Neville Greaves
Wuhan University of Technology, China <br>
University of Cambridge, UK
: J Nanomater Mol Nanotechnol
Abstract
While glasses are conventionally formed by quenching from the molten state, amorphization from the crystalline state, notably from zeolitic precursors offers an interesting alternative. Synchrotron radiation, neutron scattering and atomistic simulation have been instrumental in analyzing these novel processes. The role of THz vibrations in zeolitic collapse appears to play a significant role. Most recently the amorphization route has resulted in the development of glasses derived from metal organic framework materials, notably from zeolitic imidazolate frameworks. Organic-inorganic geometries also occur at glasspolymer interfaces in composites, such as glass ionomer cements, where aluminium at the surface of glass particles chelate with carboxyl groups from the surrounding polyacrylic acid. In each case, hybrid bridges dictate mechanical properties, which for cements, unexpectedly fluctuate with setting.
Biography
Email: gng25@cam.ac.uk
