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具有增强机械和生物性能的抗菌PLA/Mg复合物用于可生物降解的骨科植入物

Hyun Lee¹, Da Yong Shin², Yuhyun Na¹

¹Department of Biomedical-Chemical Engineering, The Catholic University of Korea, 43 Jibong-ro, Bucheon-si, Gyeonggi-do 14662, Republic of Korea; Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Bucheon-si, Gyeonggi-do 14662, Republic of Korea.

Biomaterials advances

|June 19, 2023

概括

这项研究开发了一种新的可生物降解的多乳酸 (PLA) / (Mg) 复合物,用于骨科植入物. 复合材料显示了提高的机械强度,增强的骨愈合和有效的抗菌特性,为医疗应用提供了有前途的替代品.

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
聚合物复合材料聚合物复合材料

背景情况:

骨科植入物需要生物降解性,骨愈合能力和预防感染.
聚乳酸 (PLA) 具有生物降解性,但缺乏机械强度和生物活性.
(Mg) 具有良好的生物活性,生物降解性和机械性能,具有固有的抗菌光热效应.

研究的目的:

制造一种抗菌的聚乳酸/ (PLA/Mg) 复合物,用于增强的骨科植入物.
为了提高机械强度,生物活性,并引入抗菌性质的PLA使用Mg.

主要方法:

使用高剪切混合机制造15%和30%体积的PLA/Mg复合材料.
评估机械性能 (压力强度,刚度).
通过光热刺激评估生物性能 (细胞附着,增殖,分化) 和抗菌作用.

主要成果:

与纯PLA相比,PLA/Mg复合材料的压力强度 (高达107.3MPa) 和刚度 (高达2.5GPa) 显著提高.
15体积%的复合物改善了细胞附着和增殖;30体积%的由于快速降解而减少了增殖.
PLA/Mg复合材料表现出抗菌活性,这种活性被近红外线 (NIR) 诱导的光热效应放大.

结论:

抗菌PLA/Mg复合材料为可生物降解的骨科植入物提供了卓越的机械和生物性能.
15体积%的Mg复合物显示出增强骨愈合和预防感染的潜力.
这种复合材料是未来骨科应用的有希望的候选材料.

关键词:

它具有抗菌作用,具有抗菌作用.可生物降解的复合材料 (Mg) 是一种骨科应用在骨科应用.多乳酸 (PLA) 是一种多乳酸.

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