fulltext.study @t Gmail

Improved resistance to wear and fatigue fracture in high pressure crystallized vitamin E-containing ultra-high molecular weight polyethylene

Paper ID Volume ID Publish Year Pages File Format Full-Text
10595 693 2009 11 PDF Available
Title
Improved resistance to wear and fatigue fracture in high pressure crystallized vitamin E-containing ultra-high molecular weight polyethylene
Abstract

Higher crystallinity and extended chain morphology are induced in ultra-high molecular weight polyethylene (UHMWPE) in the hexagonal phase at temperatures and pressures above the triple point, resulting in improved mechanical properties. In this study, we report the effects of the presence of a plasticizing agent, namely vitamin E (α-tocopherol), in UHMWPE during high pressure crystallization. We found that this new vitamin E-blended and high pressure crystallized UHMWPE (VEHPE) has improved fatigue strength and wear resistance compared to virgin high pressure crystallized (HP) UHMWPE. This suggested different mechanisms of wear reduction and fatigue crack propagation resistance in UHMWPE.

Keywords
Semi-crystalline; Plasticity; Cross-linking; Oxidation resistance; Fatigue resistance; Biomaterials
First Page Preview
Improved resistance to wear and fatigue fracture in high pressure crystallized vitamin E-containing ultra-high molecular weight polyethylene
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 30, Issue 10, April 2009, Pages 1870–1880
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering