Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites

Synthesis and Tribological Behavior of Ultra High Molecular Weight Polyethylene (UHMWPE)-Lignin Composites

In this paper, we report the synthesis and characterization of ultra-high molecular weight polyethylene (UHMWPE)-lignin composites. During this study four different compositions, namely UHMWPE, UHMWPE-13 wt. % lignin, UHMWPE-25 wt. % lignin and UHMWPE-42.5 wt. % lignin were fabricated by hot pressing. Detailed microstructural studies by scanning electron microscopy (SEM) showed that UHMWPE and ...

Aging effect on the tribological behavior of a Novel 3Y-TZP/Nb Biocomposite against Ultra High Molecular Weight Polyethylene (UHMWPE)

The aim of this study was to evaluate the friction and wear behavior of ultra high molecular weight polyethylene (UHMWPE) against 3Y-TZP and a novel 3Y-TZP/niobium (Nb) biocomposite. The ceramic and the biocomposite materials were subjected to an accelerated aging process to evaluate the changes in the tribological behavior after this treatment. To carry out the tribological tests, a reciprocat...

Synthesis of high molecular weight polyethylene using FI catalyst

A FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′­diisopropylanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. The effects of reaction conditions on the polymerization were examined in detail. The increase in ethylene pressure and rise in polymerization temperature up to 35 oC were favorable for catalyst/MAO to raise the catalytic activity as...

Ultra high molecular-weight polyethylene (UHMWPE) in total knee replacement: fabrication, sterilisation and wear.

THE JOURNAL OF BONE AND JOINT SURGERY G. Blunn, PhD, Professor The Centre for Biomedical Engineering, Institute of Orthopaedics, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK. E. M. Brach del Preva, MD, Associate Professor Department of Traumatology and Orthopaedics, University of Turin, Via Zuretti 29, 10126 Turin, Italy. L. Costa, PhD, Professor IFM Chemistry Department, University of Turin,...

Wear of Ultra High Molecular Weight Polyethylene