Autowave regime of low-temperature radiation-induced polymerization of cyclopentadiene

Auto-wave regimes of low-temperature radiation-induced polymerization in the cyclopentadiene-butyl chloride glassy system initiated with local brittle fracture of a sample at 77 K have been discovered and studied. The samples were irradiated by 60Co γ-rays at 77K wich dose rate 33 Gy/s. The rate of spreading of polymerization front is increased with increase of a dose of preliminary γ-irradiation from 5 mm/s at 100 kGy up to 60 mm/s at 1200 kGy because of the usage of the potential energy accumulated in the system under the low-temperature radiolysis. Polymerization in the auto-wave regime realizing due to the reverse relation between brittle fracture and chemical transformation begins at 77 K, molecular weight and yield of a polymer are higher than those in the case of thermoactivated polymerization