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Spectral study of degradation mechanism of polyurethane medicinal adhesive

✍ Scribed by O. E. Davydova


Publisher
Springer US
Year
1981
Tongue
English
Weight
357 KB
Volume
34
Category
Article
ISSN
0021-9037

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Photoacoustic study of thermal degradati
✍ M. E. Abu-Zeid; E. E. Nofal; F. A. Abdul-Rasoul; M. A. Marafi; G. S. Mahmoud; A. πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 English βš– 363 KB πŸ‘ 2 views

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