ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The Effect of Fillers upon Degradation of Poly(organosiloxane) Rubbers

R. M. Aseeva, A. A. Berlin, and S. M. Mezhikovskii

Institute of Chemical Physics, Academy of Sciences of the USSR, Moscow

Abstract: The effect of silica fillers upon thermal and oxidative thermal degradation of poly(dimethyl vinylsiloxane) rubber has been studied. The silica fillers have been found to deactivate terminal hydroxyl groups of polymer and to inhibit the chain oxidative process of organic substituents, besides promoting the observation of heterolytic cleavage of siloxane bonds. The role of active centres on the silica surface has been determined. The kinetic parameters of the oxidative thermal degradation of the polymer vs. the fillers concentration have been determined.

Full paper in Portable Document Format: 265a397.pdf

Chemical Papers 26 (5) 397–403 (1972)