Abstract
The effects of conditions for electron beam irradiation on the amounts of volatiles from irradiated polyethylene film were studied. The concentration of oxygen up to 5%in the atmosphere affected the amounts of carbonyl compounds, and their amounts decreased remarkably with a decrease in the concentration of oxygen. A low irradiation temperature of -75°C, a radiation energy of 1.5 MeVor lower, and a higher beamcurrent were effective in reducing the amounts of volatiles formed by irradiation. The effect of conveyor speed was not so significant. It has also been found that electron beam irradiation is better in restraining the formation of volatiles than γ-irradiation.
