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Electron spin resonance of gamma-irradiated poly/ethylene 2,6-naphthalene dicarboxylate/.The two types of radicals trapped in gamma-irradiated PEN 2,6 are identified by ESR as - O - CH - CH2 - O - (radical I) and a radical located on the naphthalene ring (radical II). The concentrations of the radicals in the gross polyer are 10 to 20% of I and 80 to 90% of II. Similar trapped radicals are established in beta-irradiated PET, a structurally related polymer.
Document ID
19720040181
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rogowski, R. S.
Pezdirtz, G. F.
(NASA Langley Research Center Hampton, Va., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Publication Information
Publication: Journal of Polymer Science
Subject Category
Chemistry
Accession Number
72A23847
Distribution Limits
Public
Copyright
Other

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