EPR study of the formation of radicals in PP with antioxidants irradiated with gamma rays
โ Scribed by P. Silva; C. Albano; R. Perera
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 227 KB
- Volume
- 265
- Category
- Article
- ISSN
- 0168-583X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Electron paramagnetic resonance (EPR) measurements of Polypropylene (PP) and its blends with a Styrene-Butadiene-Styrene (SBS) copolymer in 10, 20, 30 and 40 wt.% of SBS were carried out. The samples were irradiated in the 0 6 D 6 100 kGy range at a dose rate of 4.8 kGy/h. Typical spectra indicative
lsotactic polypropylene (iPP) was mechanically degraded in the absence and presence of a phenolic antioxidant at liquid nitrogen temperature in the presence of oxygen. The interaction of the primarily formed iPP macroradicals with oxygen and phenol was studied by EPR spectroscopy in the temperature
## Abstract Photolysis of trifluoromethyl ketones (TFMKs) 1aโ1e __versus__ the nonโfluorinated ketones 2aโ2b in the presence of radical initiators by electron paramagnetic resonance spectroscopy has been studied for the first time. The transient radicals generated after irradiation of the ketones w