Article | REF: J5820 V1

Sol-gel polymerization process

Authors: Pierre AUDEBERT, Fabien MIOMANDRE

Publication date: December 10, 2005, Review date: February 1, 2016

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4. Hybrid gels, various structures and applications

4.1 Hybrid gels

The term "hybrid gels" usually refers to gels in which a significant quantity of organic substance has been introduced in such a way as to remain in the final material, whatever its state (gel or xerogel).

The organic substance may be a molecule ("host-guest" type, or gel-functionalized) or a macromolecule (interpenetrating networks). Hybrids fall into two main classes:

  • Class I gels are of the "host-guest" type, meaning that the organic (or bioorganic) and inorganic parts are intertwined on a molecular scale, but without any strong bond between them;

  • Class II gels are systems in which the organic and inorganic parts have...

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Hybrid gels, various structures and applications