Degradation of epoxy resins under high energy electron beam irradiation: Radio-oxidation
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| Title: | Degradation of epoxy resins under high energy electron beam irradiation: Radio-oxidation |
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| Authors: | Longiéras, N.1,2, Sebban, M.1, Palmas, P.1 pascal.palmas@cea.fr, Rivaton, A.2 agnes.rivaton@univ-bpclermont.fr, Gardette, J.L.2 |
| Source: | Polymer Degradation & Stability. Dec2007, Vol. 92 Issue 12, p2190-2197. 8p. |
| Subjects: | Epoxy resins, Electron beams, Irradiation, Atmosphere, Helium, Nuclear magnetic resonance spectroscopy |
| Abstract: | Abstract: The degradation of two epoxy systems exposed to electron beam irradiation in oxygen atmosphere has been studied and compared to our previous results obtained under helium atmosphere. A multi-scale approach to the degradation has been carried out using a variety of analytical methods including solid state NMR spectroscopy, 2D-WISE experiments, SEC measurements and infrared spectroscopy associated with chemical derivatisation treatments. It is shown that the degradation of both polymers is governed by radiolytic processes which involve chain scissions. The formation of oxidation products, mainly carboxylic acid chain ends, was shown at the surface of the irradiated film. Oxidative degradation is limited to the first 20μm of the film due to the low oxygen diffusion coefficient in epoxy polymers combined with the high dose rates of irradiation. [Copyright &y& Elsevier] |
| Copyright of Polymer Degradation & Stability is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 27724069 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Degradation of epoxy resins under high energy electron beam irradiation: Radio-oxidation – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Longiéras%2C+N%2E%22">Longiéras, N.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sebban%2C+M%2E%22">Sebban, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Palmas%2C+P%2E%22">Palmas, P.</searchLink><relatesTo>1</relatesTo><i> pascal.palmas@cea.fr</i><br /><searchLink fieldCode="AR" term="%22Rivaton%2C+A%2E%22">Rivaton, A.</searchLink><relatesTo>2</relatesTo><i> agnes.rivaton@univ-bpclermont.fr</i><br /><searchLink fieldCode="AR" term="%22Gardette%2C+J%2EL%2E%22">Gardette, J.L.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymer+Degradation+%26+Stability%22">Polymer Degradation & Stability</searchLink>. Dec2007, Vol. 92 Issue 12, p2190-2197. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Epoxy+resins%22">Epoxy resins</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+beams%22">Electron beams</searchLink><br /><searchLink fieldCode="DE" term="%22Irradiation%22">Irradiation</searchLink><br /><searchLink fieldCode="DE" term="%22Atmosphere%22">Atmosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Helium%22">Helium</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance+spectroscopy%22">Nuclear magnetic resonance spectroscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: The degradation of two epoxy systems exposed to electron beam irradiation in oxygen atmosphere has been studied and compared to our previous results obtained under helium atmosphere. A multi-scale approach to the degradation has been carried out using a variety of analytical methods including solid state NMR spectroscopy, 2D-WISE experiments, SEC measurements and infrared spectroscopy associated with chemical derivatisation treatments. It is shown that the degradation of both polymers is governed by radiolytic processes which involve chain scissions. The formation of oxidation products, mainly carboxylic acid chain ends, was shown at the surface of the irradiated film. Oxidative degradation is limited to the first 20μm of the film due to the low oxygen diffusion coefficient in epoxy polymers combined with the high dose rates of irradiation. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymer Degradation & Stability is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.polymdegradstab.2007.01.035 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 2190 Subjects: – SubjectFull: Epoxy resins Type: general – SubjectFull: Electron beams Type: general – SubjectFull: Irradiation Type: general – SubjectFull: Atmosphere Type: general – SubjectFull: Helium Type: general – SubjectFull: Nuclear magnetic resonance spectroscopy Type: general Titles: – TitleFull: Degradation of epoxy resins under high energy electron beam irradiation: Radio-oxidation Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Longiéras, N. – PersonEntity: Name: NameFull: Sebban, M. – PersonEntity: Name: NameFull: Palmas, P. – PersonEntity: Name: NameFull: Rivaton, A. – PersonEntity: Name: NameFull: Gardette, J.L. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 01413910 Numbering: – Type: volume Value: 92 – Type: issue Value: 12 Titles: – TitleFull: Polymer Degradation & Stability Type: main |
| ResultId | 1 |
