Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1994-8-11
pubmed:abstractText
A study was performed to determine the time-course of oxidative degradation and the extent to which the degradation proceeded through the bulk of ultra-high molecular weight polyethylene joint components that had been irradiated and stored on a shelf. Standardized cylindrical samples, taken from a single batch of extruded polyethylene, were cleaned, packaged, and sterilized according to protocols used for commercial joint-replacement components. After sterilization, the samples were stored in the packages for time-periods of one day to more than one year. At each interval studied, thin sections were cut as a function of depth into the bulk of the sample and were used to determine the density and the infrared spectra. Marked alterations in the density and the infrared spectra consistent with continuing oxidative degradation occurred throughout the year of storage on the shelf. The alterations were most severe near the surface of the samples.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0021-9355
pubmed:author
pubmed:issnType
Print
pubmed:volume
76
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1052-6
pubmed:dateRevised
2010-10-25
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Post-irradiation aging of ultra-high molecular weight polyethylene.
pubmed:affiliation
Department of Biomechanics, Hospital for Special Surgery, New York, NY 10021.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't