کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203966 | 1381945 | 2007 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The origins of volatile oxidation products in the thermal degradation of polypropylene, identified by selective isotopic labeling
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The origins of volatile oxidation products in the thermal degradation of polypropylene, identified by selective isotopic labeling The origins of volatile oxidation products in the thermal degradation of polypropylene, identified by selective isotopic labeling](/preview/png/5203966.png)
چکیده انگلیسی
Making use of polypropylene samples that are selectively labeled with carbon-13 at each of the three unique positions within the repeating unit, we are conducting mass spectral analyses of the volatile organic oxidation products that are produced when the polymer is subjected to elevated temperature in the presence of air. By examination of both the parent and fragmentation ion peaks in the mass spectrum, we are able to identify the positioning of the C-13 labels within the volatile compounds, and thereby map each compound onto its site of origin from within the macromolecular structure of polypropylene. Most of the organic oxidation products are remarkably specific in terms of their genesis from the polymer. The structural results are discussed in terms of the oxidation chemistry of the macromolecule.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 92, Issue 11, November 2007, Pages 2076-2094
Journal: Polymer Degradation and Stability - Volume 92, Issue 11, November 2007, Pages 2076-2094
نویسندگان
Robert Bernstein, Steven M. Thornberg, Roger A. Assink, Adriane N. Irwin, James M. Hochrein, Jason R. Brown, Dora K. Derzon, Sara B. Klamo, Roger L. Clough,