| Download | - View accepted manuscript: Stabilization of polypropylene against γ-initiated oxidation : Stabilizer attack during radiolysis (PDF, 857 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/0141-3910(92)90123-M |
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| Author | Search for: Falicki, S.1; Search for: Carlsson, D. J.1; Search for: Cooke, J. M.; Search for: Gosciniak, D. J. |
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| Affiliation | - National Research Council of Canada. NRC Institute for Chemical Process and Environmental Technology
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| Format | Text, Article |
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| Abstract | The destruction of additives in γ-irradiated polypropylene films has been measured by infrared and electron spin resonance spectroscopy immediately after irradiation. Hindered amine or hindered phenol additives containing the ester group [>CH---O---C(=O)---CH₂~] were found to undergo ester destruction. Hindered amines containing the >CH~O---C(=O)---C--- group were not attacked. Phenols showed extensive loss of the phenolic ---OH group, presumably by peroxyl radical attack. Irradiation under conditions where peroxyl radicals were not formed or were scavenged competitively by the presence of a phenol prevented or reduced attack on the reactive ester linkage in hindered amines. It is possible that peroxyl radical attack is occurring at the ---CH₂--- group α to the carbonyl, which is known to be activated towards oxidation. |
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| Publication date | 1992 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 32946 |
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| NPARC number | 14500474 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 91b05326-efd8-437f-b65f-fe97c7bebed0 |
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| Record created | 2010-03-01 |
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| Record modified | 2020-04-23 |
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