Thermal degradation of polyurethanes. Model compounds
β Scribed by A. Orzeszko; A. Kolbrecki
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 235 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0021-8995
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Polyurethane rigid foam shows substantial changes in its photoacoustic absorption spectra (PAS) on heating in the presence of air. These spectral changes are due to conjugated structures and quinone-imide formation, formed during degradation. The mechanism of degradation appears to be free radical i