کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5204297 | 1381956 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of photosensitized oxidation and singlet oxygen on degradation of stabilized polymers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Impact of photosensitized oxidation and singlet oxygen on degradation of stabilized polymers Impact of photosensitized oxidation and singlet oxygen on degradation of stabilized polymers](/preview/png/5204297.png)
چکیده انگلیسی
Photooxidation, an important component of polymer weathering, involves excited polymer-inherent chromophores and photoactive additives and impurities. Quenching of excited species by ground state molecular oxygen, the common component of air, results in the formation of singlet state molecular oxygen 1O2. This active form of oxygen is a strong oxygenation agent attacking stabilized polymers. Resulting transformations of the polymer matrix and additives have a negative effect on the service life of the material. The formation of 1O2, its properties, and reactions and products arising from stabilizers are outlined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 93, Issue 9, September 2008, Pages 1681-1688
Journal: Polymer Degradation and Stability - Volume 93, Issue 9, September 2008, Pages 1681-1688
نویسندگان
Jan PospÃÅ¡il, Stanislav NeÅ¡půrek, Jan PilaÅ,