Influence of crosslinking on pressure sensitivity of free-radical decay in γ-irradiated copolymer of methyl methacrylate and ethytene dimethacrylate

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Abstract
The dependence of the rate constant for free-radical decay on pressure and concentration of chemical crosslinks has been studied in irradiated copolymer of methyl methacrylate and ethylene dimethacrylate. A decrease in the sensitivity of the rate constant for decay to pressure changes with the increasing degree of crosslinking has been found. The effect of molecular motions of backbone on the transport of a radical center in solid polymer is shown.