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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41862

Title: Tribological and Oxidational Properties of Porous High Pressure Crystallized and Vitamin E-incorporated UHMWPE
Authors: Chau-Chang Chou;Yang-Zhi Wang;Jyun-Hao You;Cheng-Lun Wu
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Sliding wear;polymers;bio-tribology;joint;prostheses;surface analysis
Date: 2014
Issue Date: 2017-04-07T02:02:21Z
Publisher: 2014 International Conference on Engineering Tribology Technology
Abstract: Abstract:The material properties of porous high-pressure crystallized ultra-high-molecular weight polyethylene containing vitamin E as a plasticizing agent and an antioxidant were studied. Two porous ultra-high-molecular weight polyethylene samples, with and without vitamin E, were produced by mixing ultra-high-molecular weight polyethylene powder and sodium chloride micro particles before the high-pressure crystallized process. A solid ultra-high-molecular weight polyethylene without vitamin E additive was made as a benchmark. The porosities of both porous samples were evaluated by energy-dispersive X-ray analysis of cross-sectional areas. The crystallinity of the composites was examined by thermal (differential scanning calorimetry) and spectral (X-ray diffraction) analyses. The short-term and long-term oxidative stabilities of porous ultra-high-molecular weight polyethylenes, with or without incorporated vitamin E, were investigated, respectively, by evaluations of differential scanning calorimetry oxidation induction time and Fourier transform infrared oxidation index. The tribological performance was also studied by a pin-on-disk test under lubrication with normal saline. The particulate size distribution of wear debris demonstrated the better biocompatibility of ultra-high-molecular weight polyethylenes with higher porosity. However, the antiwear capability and the oxidation resistance of the porous ultra-high-molecular weight polyethylene were inferior to those of the solid one. These drawbacks were significantly reduced by the influence of the vitamin E agent.
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41862
Appears in Collections:[機械與機電工程學系] 演講及研討會

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