کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
576809 | 1453088 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photooxidation of cellulose nitrate: New insights into degradation mechanisms
ترجمه فارسی عنوان
عکس برداری از نیترات سلولز: بینش جدید به مکانیزم تخریب
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کلمات کلیدی
عکس اکسیداسیون، نیترات سلولز، نور فرابنفش، پروانه
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
Cellulose nitrate (or nitrocellulose) has received considerable interest due to its uses in various applications, such as paints, photographic films and propellants. However, it is considered as one of the primary pollutants in the energetic material industries because it can be degraded to form polluting chemical species. In this work, the UV light degradation of cellulose nitrate films was studied under conditions of artificially accelerated photooxidation. To eliminate the reactivity of nitro groups, the degradation of ethylcellulose was also investigated. Infrared spectroscopy analyses of the chemical modifications caused by the photooxidation of cellulose nitrate films and the resulting formation of volatile products revealed the occurrence of de-nitration and the formation of oxidation photoproducts exhibiting lactone and anhydride functions. The impact of these chemical modifications on the mechanical and thermal properties of cellulose nitrate films includes embrittlement and lower temperatures of ignition when used as a propellant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 272, 15 May 2014, Pages 137-147
Journal: Journal of Hazardous Materials - Volume 272, 15 May 2014, Pages 137-147
نویسندگان
Sebastien Berthumeyrie, Steeve Collin, Pierre-Olivier Bussiere, Sandrine Therias,