Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5203966 | Polymer Degradation and Stability | 2007 | 19 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
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,