Destruction energy index (DEI) of vitamin E blended UHMWPE for artificial joints
| Autor: | Naoya Hatano, Masaya Higaki, Youhei Otsu, Tatsuya Otsu, Shinji Mikami, Mitsuhiro Matsumoto, Daisuke Kono, Atsushi Matsubara, Naohide Tomita |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
sliding friction
biomedical materials polymer blends viscosity prosthetics wear resistance destruction energy index artificial joints start-up wear resistance characteristics dl-α-tocopherol DEI wear-like destruction silicone oils blending vitamin E blended UHMWPE ultrahigh molecular weight polyethylene friction testers sliding interface microdisplacement Biotechnology TP248.13-248.65 Biochemistry QD415-436 |
| Zdroj: | Biosurface and Biotribology (2019) |
| Druh dokumentu: | article |
| ISSN: | 2405-4518 62487949 |
| DOI: | 10.1049/bsbt.2018.0027 |
| Popis: | Destruction resistance such as start-up wear resistance characteristics of vitamin E (dl-α-tocopherol) blended ultra-high molecular weight polyethylene (UHMWPE) were evaluated using the destruction energy index (DEI). The DEI is used to evaluate wear-like destruction, by minimising the effects of viscosity at the sliding interface, and is estimated using newly designed friction testers. In this experiment, silicone oils of different viscosities were used to determine micro displacement up to a start-up point, and the DEI of the UHMWPE was changed from 17.48 to 1.84 μJ by adding vitamin E. The results suggest that the blending with vitamin E reduces destruction of UHMWPE at start-up friction in silicone oils. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|
Plný text