通过酸在粘合剂喷射添加剂制造中的酸后加工,提高基于酸的骨植入物的机械性能
Zhijie Huang1, Jiangtao Li1, Bing He1
1Huazhong University of Science and Technology (HUST), Huazhong University of Science and Technology (HUST), Wuhan, 430074, CHINA.
Biomedical materials (Bristol, England)
|August 29, 2024
概括
酸后处理显著增强了粘合剂喷射的酸骨植入物. 这种方法提高了机械强度,并增加了有机物质,满足了人类骨的标准,无需进行热处理.
科学领域:
- 生物材料工程 生物材料工程
- 添加剂制造 添加剂制造 添加剂制造
- 整形外科植入物 整形外科植入物
背景情况:
- 粘合剂喷射为生物陶骨植入物提供了优势,但面临着低强度和热应力方面的挑战.
- 目前的方法缺乏必要的有机成分,并且在烧结后遭受不良的尺寸变化.
研究的目的:
- 开发一种使用酸 (CA) 的新型后加工方法,以改善粘合剂喷射酸 (HA) 植入物的机械性能和有机含量.
- 为了评估CA作为后加工剂的有效性,与酸 (BA) 作为对照剂相比.
主要方法:
- 与25%重量%的聚乙烯醇 (PVA) 混合的Hydroxyapatite (HA) 粉末使用与脱离离子水的粘合剂喷射来制备和打印.
- 绿色样品经过室温5重%酸 (CA) 溶液的后处理.
- 分析了机械性能 (压力强度,模量) 和微观结构.
主要成果:
- 酸处理使HA颗粒之间的PVA薄膜厚度增加了320.0%.
- 压力强度增加了840.7% (7.37 ± 0.28 MPa) 和模量增加了1571.3% (102.81 ± 6.74 MPa).
- 获得的机械性能符合人类椎骨的标准.
结论:
- 酸是一种有效的室温后处理剂,用于粘合剂喷射HA骨植入物.
- 这一策略提高了机械性能,并结合了有机物质,解决了骨植入物的增材制造中的关键局限性.
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