Abstract
The effect of initiation conditions on the self-sustained-wave regime of copolymerization of acetaldehyde with hydrogen cyanide has been studied. The local brittle failure in the bottom of the sample makes it possible to implement the high-velocity (detonation-like) traveling wave regime of copolymerization. The velocity of propagation of the reaction wave front achieves 1870 mm/s at an irradiation dose of 55 kGy. However, the copolymer formed in the course of preliminary irradiation at 77 K changes the properties of the solid matrix of the reagents and, at high irradiation doses, the high-velocity traveling wave regime of copolymerization degenerates. The velocity of propagation of the copolymerization wave decreases, and, at an irradiation dose of 200 kGy, it is as low as 50 mm/s. The same velocity of propagation is observed when the reaction is initiated by the brittle failure in the top of the sample.
Published Version
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