| Summary: | 碩士 === 龍華科技大學 === 化工與材料工程系碩士班 === 103 === Calcium sulfate cement has been used in bone repaired for many years. The bone cement has good biocompatibility, and the pore size can promote vessels and new bone growth after crystallization. In the mixing process, slurry has good mobility when adding some water, and bone cement slurry can be injected into the irregular shape of the affected area, but it absorbs so rapid in human’s body that it must rely on other chemical compound to extend absorption time.
This study investigated that whether calcium sulfate pass through γ-ray sterilization will affect its nature or not. We use non-sterilization powder as the control group, and also use different doses of radiation to sterilize. Then analyzing the powder properties and material properties.
According to the result of the experiment, after calcium sulfate powder passed through γ-ray sterilization by FTIR, TGA, XRD and pH value, we can determine that the chemical nature had the little effect. But we could find the result in mechanical property, at 20kGy, it has the best compressive strength which can get up to 44.23Mpa, and at 40kGy, it also get up to 41.84Mpa. At 70kGy, it has a more average compressive and flexural strength, which can withstand higher stresses.
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