Surface and bulk analysis of the oxidation of polyolefins

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TypeArticle
Journal titlePolymer Degradation and Stability
Volume49
Pages2128; # of pages: 7
AbstractThe non-uniformity of oxidation across polypropylene and polyethylene films has been measured by a combination of X-ray photoelectron spectroscopy (XPS), internal reflection infrared spectroscopy and bulk property measurements. Films were photo-oxidized or -y-irradiated in air. Photo-oxidized film showed detectable oxidation at a very early stage in the outermost 70 A of the film thickness (as measured by XPS). Oxidation advanced into the lilms as exposure level increased. Although y-irradiated films also showed enhanced surface oxidation, this was attributed to the reaction of the polymer surfaces with short-lived species such as ozone from the radiolysis of the moist air atmosphere. When films were -y-irradiated and oxidized under conditions which precluded these reactions. oxidation proceeded uniformly throughout the film cross-section.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number51931
NPARC number16020203
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Record identifier9898056f-b846-4c3e-88ae-54eef64a3a21
Record created2010-09-02
Record modified2016-05-09
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