The influence of orientation on the radiation-induced crosslinking/oxidative behavior of different PEs

Dielectric study of post-irradiation effects in gamma-irradiated polyethylenes

“…Exposure of PE films to radiation under air results in a significant increase in oxidation and the formation of carbonyl groups as major products. The spectra modifications that occur in the carbonyl region are shown in our previous paper (Milicevic et al, 2007). The carbonyl groups are mainly ketone groups at 1718 cm À 1 and aldehyde groups at 1728 cm À 1 , and both are formed in the amorphous region of the polymer.…”

The physical and chemical properties of gamma ray irradiated polymer electrolyte films

“…The damage produced by gamma ray interaction with polymer electrolytes leads to the formation of new defects and sub energy levels. It is observed that the optical absorption increases with increasing radiation dose which may be attributed to the increase in the number of dipoles due to the irradiation, where these dipoles are mainly C-O and C_O groups [47][48][49]. The shoulder band appeared at~220 nm and is attributed to the C_O group in polymeric molecule [50].…”

Factors determining the transport coefficients of aroma compounds through polyethylene films

“…with DH 0 , the enthalpy of melting per gram of 100% crystalline PE estimated to be equal to 289 J g À1 (Milicevic et al, 2007;Wunderlich, 1973) and DH * , the measured enthalpy of melting for each polyethylene.…”