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المؤلفAl-Ma'Adeed, M. A.
المؤلفAl-Qaradawi, I. Y.
المؤلفMadi, N.
المؤلفAl-Thani, N. J.
تاريخ الإتاحة2023-11-19T07:42:14Z
تاريخ النشر2006-02-28
اسم المنشورApplied Surface Science
المعرّفhttp://dx.doi.org/10.1016/j.apsusc.2005.08.077
الاقتباسAl-Ma’adeed, M. A., Al-Qaradawi, I. Y., Madi, N., & Al-Thani, N. J. (2006). The effect of gamma irradiation and shelf aging in air on the oxidation of ultra-high molecular weight polyethylene. Applied surface science, 252(9), 3316-3322.‏
الرقم المعياري الدولي للكتاب01694332
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=32644446161&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/49476
الملخصThis study has investigated the effect of shelf aging, for up to one year in air, on the properties of gamma-irradiated ultra-high molecular weight polyethylene (UHMWPE). A variety of techniques were used to characterize the properties of treated samples. Differential scanning calorimetery (DSC) was used to characterize the morphology. The extent of cross-linking in a polymer network was detected by swelling measurements. The durometer hardness test was used to measure the relative hardness of this material, and changes in density were also measured. Results from all these measurements were combined to explain the changes in the microstructure of the aged, irradiated UHMWPE. This study shows that crystallinity is increased with radiation dose and with aging due to chain scission, which leads to a reduction in the molecular weight of the material. This allows the chains to rearrange to form crystalline regions. Positron annihilation lifetime spectroscopy confirms these conclusions. Fractional free volumes have been deduced from lifetime parameters, which correlate with the data obtained by the other techniques. © 2005 Elsevier B.V. All rights reserved.
اللغةen
الناشرElsevier
الموضوعCross-linking
Crystallinity
Free volume
Gamma irradiation
Oxidation
UHMWPE
العنوانThe effect of gamma irradiation and shelf aging in air on the oxidation of ultra-high molecular weight polyethylene
النوعArticle
الصفحات3316-3322
رقم العدد9
رقم المجلد252
dc.accessType Abstract Only


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