Abstract
Samples of polycarbonate subjected to γ-radiation under different conditions have been characterized by means of intrinsic viscosity, solubility and dynamic-mechanical measurements. All the data indicate that the effect of the dose absorbed by the material increases markedly with the water content in the polymer during the irradiation. In absence of water, up to 20 Mrad, the material seems essentially insensitive to the irradiation. In the presence of water crosslinking predominates at small doses while at higher doses main chain scission is more effective.
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