"Hybrid" silicones. An overview on polysilalkylene or silarylene siloxanes fluorinated or not.
Laboratoire de Chimie Macromoléculaire - UMR-CNRS 5076 - Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), 8 rue de l'Ecole Normale, Montpellier 34296, France
Because of the increasing need for high-temperature resistant materials, like elastomers for applications in advanced technological areas (aerospace, defense, computer applications), a vast amount of research was developed in the area of inorganic-organic hybrid polymers. Organosiloxane polymers are one of the most important class of such materials due to their outstanding properties like thermal stability, low glass transition temperature, unusual surface properties, excellent gas permeability. But the classical polysiloxanes present the drawback of depolymerization in certain conditions (acid or base medium or high temperature). So, in order to try and avoid this possible depolymerization, a new class of polysiloxanes has been developed, mainly since the 1970s: the so-called "hybrid silicones", that are polysilalkylene siloxanes, fluorinated or not and polysilarylene siloxanes also fluorinated or not.
Presentation: invited oral at E-MRS Fall Meeting 2005, Symposium E, by Francine Guida-Pietrasanta
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-03-15 07:41 Revised: 2009-06-07 00:44