The effects of gamma irradiation on the fate of hindered phenol antioxidants in food contact polymers. Analytical and 14C-labelling studies

Influence of oxygen and long term storage on the profile of volatile compounds released from polymeric multilayer food contact materials sterilized by gamma irradiation

“…When irradiating (B, C, E, F), the most distinctive feature of gamma ray treated samples is a huge peak of 1,3-ditertbutylbenzene about 10 times higher than the rest of compounds. This fact has been already confirmed by other authors [10,[25][26][27][28], as a degradation product from both phenolic (primary) and phosphite-type (secondary) antioxidants. These are normal components of polyolefin formulations and are easily destroyed by gamma irradiation.…”

Antioxidants and their migration into food simulants on irradiated LLDPE film

“…The fact about detection of the toluene in irradiated film based on the increasing of the residues of the compound in proportion to the increasing g-radiation. Other parts of the radiolysis products seems to bind covalently with the polyolefin polymer chains during the irradiation treatment and could not extract from the LLDPE (Allen, Leathard, & Smith, 1991).…”

Physico-chemical ageing of ethylene–norbornene copolymers: a review

“…This decrease is explained by the degradation of the antioxidant and/or by the formation of covalent bonds between the degraded molecules and the polymer chains. Allen et al [152] have already reported similar bonding by 14 C-labelling of the antioxidant. The authors showed that Irganox 1076 gave one significant degradation product, whereas Irganox 1010 gave three major and several minor degradation products after gamma radiation for doses up to 50 kGy.…”