Electron beam irradiated polyamide-6 at different temperatures

Electron beam irradiation of Polyamide-6 (PA-6) films was carried out over a range of irradiation doses (15–1200kGy) in air at different temperatures (from room temperature to 80°C), and at a dose rate of 4.48kGy/min. The effect of temperature on the radiochemical crosslinking, scission yield, and t...

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Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2013-03, Vol.84, p.140-144
Main Authors: Burillo, G., Adem, E., Muñoz, E., Vásquez, M.
Format: Article
Language:English
Subjects:
Crosslinking
Decay
Dosage
Electron beams
Electron paramagnetic resonance
Free radicals
Irradiation
Molecular weight
Polyamide-6
Radiation crosslinking
Radiation degradation
Temperature effect
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description Electron beam irradiation of Polyamide-6 (PA-6) films was carried out over a range of irradiation doses (15–1200kGy) in air at different temperatures (from room temperature to 80°C), and at a dose rate of 4.48kGy/min. The effect of temperature on the radiochemical crosslinking, scission yield, and the dose of incipient gel formation of PA-6 were investigated on the basis of solution viscosity, molecular weight and gel content. The crosslinking efficiency increases with increasing irradiation dose and temperature. The crosslinking rates of PA-6 irradiated above the glass transition temperature (Tg), about 50°C, are higher than those samples irradiated at temperatures below Tg. FTIR and electron paramagnetic resonance (EPR) spectroscopy are used to determine modifications in the samples induced by irradiation. EPR was also used to study the decay of the free radicals.
doi_str_mv 10.1016/j.radphyschem.2012.06.029
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subjects Crosslinking
Decay
Dosage
Electron beams
Electron paramagnetic resonance
Free radicals
Irradiation
Molecular weight
Polyamide-6
Radiation crosslinking
Radiation degradation
Temperature effect
title Electron beam irradiated polyamide-6 at different temperatures
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