This study of the irradiation chemistry of hexamethyldi-siloxane 3dsorbed onto silica shows some product yields to be markedly enhanced by the presence of the silica while other products have sharply diminished yields. Control of the surface compositi...
This study of the irradiation chemistry of hexamethyldi-siloxane 3dsorbed onto silica shows some product yields to be markedly enhanced by the presence of the silica while other products have sharply diminished yields. Control of the surface composition has allwed the determination of the interphase reactions occurring, while changes in extent of surface cover- age have shown the enhancement to occur predominantly at the surface of the particle. Chemisorption to the surface of the silica is a major result of the irradiation of physisorbed MM. The effects of various parameters on the products and on the interaction between the MM and silica is interpreted on the basis of an energy transfer mechanism. Details of this mech-anism will be described in a future publication.