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Effects of electron beam irradiation on commercial polypropylene: Kinetic study of antioxidant degradation
Author(s) -
Bourges F.,
Bureau G.,
Pascat B.
Publication year - 1992
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.2770050405
Subject(s) - polypropylene , degradation (telecommunications) , irradiation , materials science , kinetic energy , antioxidant , cathode ray , electron beam processing , composite material , beam (structure) , chemical engineering , electron , chemistry , engineering , structural engineering , electrical engineering , physics , nuclear physics , organic chemistry , quantum mechanics
The long‐term influence of electron beam irradiation on food packaging materials (OPP) was studied. After irradiating the material at dose levels of 2, 5 and 10 kGy, we have shown a partial or complete disappearance of the antioxidant (Irganox 1010 and Irgafos 168) over time and a release of five new compounds resulting from antioxidant degradation. All of these degradation compounds have been identified and quantitatively analysed in relation to post‐irradiation time and absorbed dose. These results allow an explanation of the antioxidants' behaviour during storage of the irradiated polypropylene at room temperature.