| Ion beam modifications of biocompatible polymers for biomedical applications |
| Paper ID : 1004-ISCH |
| Authors |
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Abdul-Tawwab Abdul-Kader * Physics Dept., Faculty of Science, Helwan University |
| Abstract |
| Nowadays, improve the surface hardness and hydrophilicity of polymer surfaces prior to their use for biomedical applications became an important issue. In this study ultra-high molecular weight polyethylene (UHMWPE) as a biocompatible material was bombarded with 9 MeV Cl+2ions to the fluences ranging from 1x1013 to 5x1014 cm-2. UHMWPE material is under consideration for load bearing surfaces in biological and technical applications. Unfortunately, failure is often observed caused by the PE fragility. Changes of surface layer composition of UHMWPE produced by ion irradiation were studied by Rutherford back scattering spectrometry (RBS) and NRA techniques. Vicker’s micro-hardness (Hv) techniques were used to investigate the surface hardness of the bombarded samples. Important hydrogen release and oxygen uptake were observed with increasing ion fluences. It was found that the surface hardness and adhesion parameters increase with increasing the ion beam fluence. The results obtained in this work confirm that the ion beam bombardment technique is powerful technique to improve the surface properties of the polymeric materials for biomedical applications. |
| Keywords |
| Biomaterials, ion bombardment, surface adhesion, surface hardness |
| Status: Abstract Accepted |