Aging and Degradation of Polyolefins. 4. Photodecompositions of Model Peroxides
Abstract
Previous reports in this series have discussed in detail the mechanism of free radical oxidation of atactic polypropylene (APP) in the dark. The present report evaluates the importance of some photochemical oxidation and cleavage reactions involved in the degradation of polypropylene. There appear to be no unusual effects of phase change or near uv radiation on the reactions of alkoxy radical models for APP. Photochemical and thermal cleavages of t-amyloxy radicals, a model for polypropylene oxy radicals, give nearly the same rate ratio. The results raise doubts about reports of cleavage of methyl radicals from tertiary alkoxy radicals in polypropylene.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1972
- Accession Number
- AD0751483
Entities
People
- Frank R. Mayo
- Harold Richardson
- Theodore Mill
Organizations
- SRI International