Siloxane based organic-inorganic hybrids

The sol-gel synthesis of siloxane-based hybrid organic-inorganic implants usually involves di- or trifunctional organosilanes co-condensed with metal alkoxides, mainly Si(OR)4 and Ti(OR)4. As we will see in this section, the incorporation of Ca salts is a common strategy to provide bioactivity at the systems. Each of these components has specific roles that will be reviewed and discussed. 

Dragan, E. S. Cazacu, M. Nistor, A., Ionic Organic/Inorganic Materials. III. Stimuli Responsive Hybrid Hydrogels Based on 01igo(N,N-dimethylamino-ethylmethacrylate) and Chloroalkyl-Functionalized Siloxanes. J. Polym. Sci., Part A Polym. Chem. 2009,47, 6801-6813. 

Therefore, numerous siloxane-based hybrid organic-inorganic materials have been developed in the past few years. This development yields many interesting new materials, with improved mechanical properties timable between those of glasses and those of polymers. Sol-gel processed hybrid materials such as, optical devices, new sensors and biosensors, new catalysts or membranes have been reported to have high efficiencly, good selectivity and stability (Lebeau, 1999). 

McCai thy D W, Mark J E and Schaffer D W (1998) Synthesis, structure, and properties of hybrid organic-inorganic composites based on polysiloxaiies I Poly(dimethyl-siloxane) elastomers containing silica, J Polym Sci Part B Polym 36 1167-1189. 

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