Fracture and fatigue properties of acrylic bone cement - The effects of mixing method, sterilization treatment, and molecular weight
Fracture and fatigue properties of acrylic bone cement - The effects of mixing method, sterilization treatment, and molecular weight
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DOI：
10.1054/arth.2000.8188
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发表时间：
2000-12-01
影响因子：
3.5
通讯作者：
Gundiah, N
中科院分区：
文献类型：
--
作者：
Graham, J;Pruitt, L;Gundiah, N
本研究的目的是表征灭菌、分子量和混合方法对丙烯酸骨水泥断裂和疲劳性能的相对和综合影响。Palacos(R) R品牌骨水泥粉采用环氧乙烷气体（EtO）或γ射线辐照灭菌。非无菌材料作为对照。采用凝胶渗透色谱法测定骨水泥粉末和固化水泥的分子量。采用手工和真空混合法制备单侧缺口弯曲试样进行断裂韧性测试。采用狗骨模制试样进行疲劳试验。电镜观察断裂机理。采用方差分析和学生t检验比较灭菌组和混合组的断裂和疲劳性能。结果表明，真空混合显著提高了材料的抗断裂疲劳性能
The purpose of this study was to characterize the relative and combined effects of sterilization, molecular weight, and mixing method on the fracture and fatigue performance of acrylic bone cement. Palacos(R) R brand bone cement powder was sterilized using ethylene oxide gas (EtO) or gamma irradiation. Nonsterile material was used as a control. Molecular weights of the bone-cement powders and cured cements were measured using gel permeation chromatography. Hand and vacuum mixing were employed to mold single edge-notched bend specimens for fracture toughness testing. Molded dog-bone specimens were used for fatigue tests. Electron microscopy was used to study fracture mechanisms. Analysis of variance and Student t-tests were used to compare fracture and fatigue performance between sterilization and mixing groups. Our results indicate that vacuum mixing improved significantly the fracture and fatigue resistance (P