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Jie Liu¹, Mingtao Sun¹, Yipeng He¹

¹State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.

Molecules (Basel, Switzerland)

|May 14, 2025

概括

用压力诱导流量 (PIF) 改进的酸/多L-乳酸 (HA/PLLA) 复合材料显示了外科植入物的骨类机械强度. 这种增强的HA/PLLA材料为骨折治疗中的内部固定板提供了有前途的潜力.

科学领域:

生物材料科学生物材料科学
材料工程材料工程材料工程
整形外科手术整形外科手术

背景情况:

内部固定板在骨折治疗中至关重要.
目前的酸/聚L-乳酸 (HA/PLLA) 复合材料的机械性能不足以用于临床应用.
压力诱导流量 (PIF) 技术为增强复合材料性能提供了一个潜在的解决方案.

研究的目的:

使用PIF技术改善HA/PLLA复合材料的机械性能.
为了评估PIF加工的HA/PLLA复合材料作为内部固定板的适用性.

主要方法:

在最佳条件下 (140°C,250MPa) 使用压力诱导流量 (PIF) 技术处理HA/PLLA复合材料.
测量了机械性能,包括屈曲强度,拉力强度和口Izod冲击强度.
分析了结晶性,晶体方向和玻璃过渡温度.
在2个月内进行了体外降解研究.

主要成果:

PIF加工显著增强了HA/PLLA复合材料,达到199.2 MPa的屈曲强度,相当于人类皮质骨.
拉力强度达到了84.2 MPa,Izod冲击强度达到了16.7 kJ/m2.
PIF加工导致多层叠加的晶体层,增加晶度 (53.1%),晶体方向 (81.6%),以及玻璃过渡温度 (78.8°C).
经过2个月的降解,复合材料保持了相当大的屈曲强度 (135.3 MPa).

结论:

PIF技术有效地提高了HA/PLLA复合材料的机械性能.
改进的HA/PLLA复合材料显示出在骨科手术中作为内部固定板的使用潜力.
增强的材料性能解决了骨折治疗当前临床限制.

关键词:

这是一种HA/PLLA复合材料.内部骨折的固定内部骨折的固定机械性能机械性能机械性能压力诱导的流量是由压力引起的.处理过程中的修改.

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