修改聚甲基甲酸骨水泥与化酸粘土纳米管的修改
1Restorative and Dental Materials Department, Oral and Dental Research Institute, National Research Centre (NRC), Giza, Dokki, 12622, Egypt. tm.hamdy@nrc.sci.eg.
BMC oral health
|August 4, 2024
概括
将化纳米管 (HNT) 添加到聚甲基甲酸盐 (PMMA) 骨质水泥中,显著提高了压力和曲强度,同时降低了峰值温度. 这种修改后的PMMA显示出对骨科和牙科应用的希望,尽管设置时间不受影响.
科学领域:
- 生物材料科学 生物材料科学
- 整形外科工程 整形外科工程
- 牙科材料科学 牙科材料科学
背景情况:
- 聚甲基甲酸盐 (PMMA) 骨水泥对于骨科和牙科手术中的初级固定至关重要.
- 目前的PMMA骨在提供稳定的骨接口方面存在局限性,需要改进.
- 众所周知,Halloysite纳米管 (HNT) 可以增强聚合物材料的机械和热性能.
研究的目的:
- 为了评估将7%重量%的化纳米管 (HNT) 纳入PMMA骨的影响.
- 评估压力强度,屈曲强度,最大温度和设置时间的变化.
- 为了确定HNT修饰的PMMA对临床应用的适用性.
主要方法:
- 准备的PMMA骨水泥有或没有7%重量%的HNT填充剂.
- 使用X射线光 (XRF) 和扫描电子显微镜 (SEM) 来进行材料表征.
- 测量和统计分析了压力强度,屈曲强度,最大温度和设置时间.
主要成果:
- 与对照组 (76 MPa和51 MPa) 相比,HNT修饰的PMMA具有显著更高的压力强度 (93 MPa) 和屈曲强度 (72 MPa).
- 在HNT修改组 (34.8 °C) 和对照组 (40 °C) 中,设置期间的最大温度降低了.
- 在对照组和HNT修饰组之间没有观察到设置时间的显著差异.
结论:
- 将7%重量%的HNT添加到PMMA骨质水泥中,可以改善关键的机械性能和热特性.
- 经过HNT修饰的PMMA在骨科和牙科应用中显示出增强性能的潜力.
- 这种新型复合材料为传统的PMMA骨提供了一个有希望的替代品.
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