Loading...
|
Please use this identifier to cite or link to this item:
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/24037
|
| Title: | Wear Resistance of Porous High Pressure Crystallized UHMWPEs as Artificial Cartilage Biomaterials |
| Authors: | Chou C. C.;Wang Y. C. |
| Contributors: | NTOU:Department of Mechanical and Mechatronic Engineering
國立臺灣海洋大學:機械與機電工程學系 |
| Keywords: | biotribology;biomimetics;cartilage;UHMWPE;wear |
| Date: | 2010-12
|
| Issue Date: | 2011-10-20T08:09:38Z
|
| Publisher: | the International Tribology ASIATRIB Congress (ASIATRIB 2010) |
| Abstract: | Porous ultra high molecular weight polyethylenes (UHMWPEs) were prepared by molding a UHMWPE-based powder, which was mixed with NaCl particles, through a high pressure crystallization (HPC) process. Vitamin E (ï¡-tocopherol) was further incorporated into the porous material before the HPC process to obtain a higher degree of crystallinity. A solid UHMWPE without blending Vitamin E during HPC was also made as a benchmark. Differential scanning calorimetry was used to detect samplesâ crystallinity and oxidative stability. Infrared Spectra of the original and aged specimens were studied to compare their long-term oxidation behaviors. The surface morphology and the porosity of the freeze-fractured cross section were observed by a scanning electron microscope. The tribological properties, including wear rate and friction coefficient, of the UHMWPEs were investigated by implementing a pin-on-disk tester under the lubrication of a normal saline. The wear debris were collected and their dimensions were statistically analyzed to survey the possibility of biological response (osteolysis). The material properties of the porous UHMWPE containing vitamin E as a plasticizing agent and an antioxidant as well were discussed. The synergetic tribological performance of the mentioned material properties and the biomimetic porous structure under lubrication was addressed and concluded. |
| Relation: | ID1286 |
| URI: | http://ntour.ntou.edu.tw/handle/987654321/24037 |
| Appears in Collections: | [機械與機電工程學系] 期刊論文
|
Files in This Item:
There are no files associated with this item.
|
All items in NTOUR are protected by copyright, with all rights reserved.
|
