2. Experimental
2.1. Materials
The Institute of Materials Science and Technology,Vienna University of Technology, provided gamma-irradiated PE-UHMW (GUR-1050 PE-UHMW) and PE-UHMW samples doped with VitaminE. All chemicals and reagents, unless in dicated specifically, were from Sigma-Aldrich(USA) with a purity of at least 99% if not stated otherwise. Ultrapure water (uH2O) was obtained from a Simplicity system (Millipore,USA) with a specific conductivity of ˝m ≤18 S/cm. Human synovial fluid (SF), sampled after joint revision, was provided by the Institute of Materials Science and Technology.