6533b872fe1ef96bd12d3a7c

RESEARCH PRODUCT

Studies on electron-beam irradiation and plastic deformation of medical-grade ultra-high molecular weight polyethylene

Marek SudołKrystyna Czaja

subject

chemistry.chemical_classificationUltra-high-molecular-weight polyethyleneRadiationMaterials scienceElectron-beam irradiationUHMWPEPolymerPolyethyleneDegradationCrystallinitychemistry.chemical_compoundchemistryOxidationMelting pointElectron beam processingDegradation (geology)IrradiationComposite materialPlastic deformationCrystallinity

description

Abstract Separated and combined electron-beam irradiation and plastic deformation effects on the structures of ultra-high molecular weight polyethylene (UHMWPE) were studied. It was found that the concentration of carbonyl (ketones, esters and peresters), hydroxyl and vinyl groups increases with the growing dose of adsorbed electrons. It also tends to exhibit a slight increase in the melting point and crystallinity of the samples. A mechanical stress in the polymer was found to accelerate radiation-induced degradation. It was concluded that each of the factors studied (i.e. electron beam sterilization and plastic deformation) had a different impact on the polymer structure. The change in the sequence of action of these factors can dramatically influence the process of UHMWPE destruction. Some effects may be limited or enhanced by the action of other factors. Therefore, the resulting effects of destructive factors depend qualitatively and quantitatively on their intensity and order.

yearjournalcountryeditionlanguage
2011-03-01Radiation Physics and Chemistry
https://doi.org/10.1016/j.radphyschem.2010.11.008