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Hybrid Sols as Intermediates to Inorganic-Organic Nanocomposites

Published online by Cambridge University Press:  10 February 2011

H. K. Schmidt
Affiliation:
Institut fuir Neue Materialien gem. GmbH, Im Stadtwald, Geb. 43 A, D-66123 Saarbrtcken, Germany
P. W. Oliveira
Affiliation:
Institut fuir Neue Materialien gem. GmbH, Im Stadtwald, Geb. 43 A, D-66123 Saarbrtcken, Germany
H. Krug
Affiliation:
Institut fuir Neue Materialien gem. GmbH, Im Stadtwald, Geb. 43 A, D-66123 Saarbrtcken, Germany
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Abstract

For the preparation of inorganic-organic hybrid materials, synthesis processes have been developed to fabricate so-called hybrid sols, which contain an inorganic core (ceramic or glass) with nano-scale dimensions surface modified by organic groupings. These groupings have been reacted to the particle surface either by amino functional silanes (e.g. in case of iron oxide nanoparticles for amino group containing silanes) reacting with aliphatic acids to make surfaces unreactive and reduce the particle-to-particle interaction by acids, or silanes with polymerizable groupings reacted with organic monomers. In the paper a summary of the recent work and the development of structural models is given. Moreover, it could be shown that surface charges can be generated in the particles within already gelled systems and thus, particles can be transported by electric fields to form gradient index materials.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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