A critical comparison of methods for hydroperoxide measurement in oxidized polyolefins

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DOIResolve DOI: http://doi.org/10.1016/0141-3910(91)90009-G
AuthorSearch for: ; Search for:
TypeArticle
Journal titlePolymer Degradation and Stability
Volume32
Issue3
Pages377386; # of pages: 10
AbstractHydroperoxide products in solid oxidized polyolefins have been measured by iodometry, Fe²⁺ reaction and by derivatization infrared spectroscopy methods. Polyethylene, polypropylene and elastomers were oxidized by photo, thermal and γ-initiation. The traditional iodometric method appears to be highly reliable within certain constraints of reaction time imposed by sample crosslinking. The Fe²⁺ reaction wasjound to give values consistently one order of magnitude below the true level because of failure of the reagents to penetrate into the oxidized polymers even after a prior swelling step. Derivatization of hydroperoxides by reaction with nitric oxide produced nitrates which could be measured by infrared spectroscopy with high sensitivity. Total nitrate yields agreed well with iodometric determination of hydroperoxide for reaction conditions under which the nitrates were stable. Different nitrates, and hence hydroperoxides, could be identified and quantified by this method.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NRC number32524
NPARC number15677172
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Record identifier6a55b12e-1c04-4904-b562-9170f1d178d6
Record created2010-06-28
Record modified2016-05-09
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