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Thermogravimetric analysis of the effect of ionizing radiation on thermal stability of polyethylene
Author(s) -
Igarashi Shoichi,
Mita Itaru,
Kambe Hirotaro
Publication year - 1964
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1964.070080334
Subject(s) - thermogravimetric analysis , irradiation , polyethylene , ionizing radiation , materials science , thermal stability , degradation (telecommunications) , thermal decomposition , atmosphere (unit) , decomposition , radiation , chemical engineering , polymer chemistry , chemistry , composite material , organic chemistry , thermodynamics , optics , telecommunications , physics , computer science , nuclear physics , engineering
The effect of radiation on thermal and oxidative degradation of polyethylene was studied by thermogravimetric analysis. It was found that the thermal stability of polyethylene irradiated in a vacuum and in air at room temperature decreases with increasing radiation dose. In nitrogen the thermal decomposition of irradiated polyethylenes occurs in one stage without marked influences of the irradiation atmosphere. In the presence of air, oxidative degradation takes place in three stages, on which irradiation atmosphere has great effect. This is due to the difference in the chemical structure of irradiated polyethylenes.