Degradation of macromolecules during mechanical fracture of a metal-polymer-metal structure

Mass-spectrometry has revealed ruptures of chemical bonds in PMMA in the polymer layers of a metal-polymer-metal structure, and has been used to determine the number of macromolecules drawn into the process of fracture. The intensity of mechanodegradation is non-symmetrical relative to the plane of...

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Bibliographic Details
Published in:Polymer science USSR 1986, Vol.28 (9), p.2074-2078
Main Authors: Pozdnyakov, O.F., Yudin, V.S.
Format: Article
Language:English
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Summary:Mass-spectrometry has revealed ruptures of chemical bonds in PMMA in the polymer layers of a metal-polymer-metal structure, and has been used to determine the number of macromolecules drawn into the process of fracture. The intensity of mechanodegradation is non-symmetrical relative to the plane of passage of the main crack and is governed by the degree of remoteness of the fracture surface from the interface. At the moment of fracture of the structures studied release of monomer was recorded. It forms as a result of depolymerization of the non-equilibrium-excited macroradicals at the apex of the growing crack. A correlation between the number of ruptures of the macrochains formed and the number of released monomer units has been established.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(86)90364-3