Comparative study of mechanical behavior of low- and high-density polyethylene based on UVB sterilization for medical usage
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY(2022)
摘要
The aim of this research is to investigate the sterilizing effect of UVB radiation on the degradation and oxidation of low- and high-density polyethylene specimens using ASTM 638 and 695. Polyethylene is a reliable, efficient, and low-cost biomaterial and an alternative to various bone transplants. Twenty high-density polyethylene (HDPE) specimens and twenty low-density polyethylene (LDPE) specimens were used for tensile and compression testing. The dosage of 13.5 J/cm 2 was chosen with an exposure time of 48 minutes during the sterilization process. In terms of mechanical tensile properties, LDPE has a lower effect compared with HDPE. The p-value of yield stress equals 3.008×10 −4 , the p-value of ultimate stress equals 2.5×10 −4 , and the p-value of break stress equals 0.0075.
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关键词
Tensile test,Compression test,Bending test,HDPE material,UVB radiation
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