Influence of γ-radiation on some polyorganosiloxanes containing siloxadihydrophenanthrenyl units

Influence of γ-irradiation in air and in vacuum at ∼ 30 deg on some polyorganosiloxanes containing siloxadihydrophenanthrenyl units and lacquer coatings on their basis has been studied. Irradiation in vacuum results in structurization of polymers, while in air besides crosslinking the degradation of the backbone chain is observed. The radiation resistance range is obtained and the reasons for different radiation stability of polyorganosiloxanes in this range are discussed. The change of the raiation resistance range for lacquer coatings on the basis of polymer under study is shown