کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5201278 | 1502887 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal degradation of γ-irradiated PVC: I-dynamical experiments
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Polymers used in nuclear industry are important constituents of nuclear wastes. In case of fire during waste transportation, package temperature could rise markedly. Within this context, the objective of this work is to analyze the thermal degradation of irradiated polymers. The dynamical degradation of radio-oxidized poly(vinyl chloride) was investigated by thermogravimetry coupled with mass spectrometry and by thermodesorption coupled with gas chromatography-mass spectrometry. Additive-free and plasticized PVC was pre-aged using γ-irradiation under air at room temperature. Pre-irradiation induces a decrease of the initial degradation temperature and leads to an early formation of HCl and benzene. Although dehydrochlorination remains the predominant degradation process within the temperature range used in this study, others processes contribute to the mass loss such as dehydration and desorption of degradation molecules resulting from radio-oxidation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 126, April 2016, Pages 219-226
Journal: Polymer Degradation and Stability - Volume 126, April 2016, Pages 219-226
نویسندگان
Imène Boughattas, Muriel Ferry, Vincent Dauvois, Christine Lamouroux, Adeline Dannoux-Papin, Elisa Leoni, Emmanuel Balanzat, Stéphane Esnouf,