**3. γ-Irradiation of PAs**

In polymer chemistry, as for electron irradiation, γ-irradiation is employed to initiate chemical reactions also in the solid phase without the addition of initiator. The purpose can be to initiate the crosslinking of individual polymers or the grafting of various monomers onto PA chains. Basically with γ-irradiation of PAs, the same processes run as those with electron irradiation. However, some differences occur due to variable conditions.
