电PLA支架中的纤维定向对定制微流体装置中的流体动力学的影响
Elisa Capuana1, Maria Testa1,2, Chiara Di Marco1
1Department of Engineering, University of Palermo, Palermo, 90128, Italy.
Advanced healthcare materials
|June 18, 2025
概括
器官在芯片 (OoC) 支架中的纤维方向显著影响流体流动. 对齐的聚乳酸 (PLA) 纤维增强了透性,这对于优化组织工程中的微流体装置设计至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 微流体学 微流体学
背景情况:
- 器官在芯片 (OoC) 系统是复制人类组织微环境的先进平台.
- 这些系统对于生物医学研究中的药物测试和疾病建模至关重要.
- 聚乳酸 (PLA) 支架在 OoC 中用于组织工程应用.
研究的目的:
- 为了研究聚乳酸 (PLA) 纤维取向在定制器官芯片 (OoC) 设置中的流体运动的影响.
- 分析脚手架形态,特别是纤维排列如何影响液体水的透性和流动动力学.
- 用实时实验测量验证计算流体动力学 (CFD) 模拟.
主要方法:
- 使用电制造具有随机和对齐纤维方向的PLA支架.
- 通过扫描电子显微镜 (SEM) 描述脚手架形态,包括厚度,纤维直径,多孔度和矩阵结构.
- 使用定制3D打印设备 (ISO 7198:2016) 和CFD模拟 (布林克曼方程) 评估液态水的透性.
- 使用带有集成压力传感器的双室微流体芯片进行实时流量测量.
主要成果:
- 与随机支架 (70微米厚,1.12微米纤维) 相比,对齐的PLA支架较薄 (35微米),纤维较小 (1.02微米).
- 纤维对齐显著改变了脚手架的透性和微流体流动力学.
- 通过实验数据验证的CFD模拟,根据脚手架形态学准确预测了流动行为.
结论:
- 器官在芯片 (OoC) 支架中的PLA纤维的方向极大地影响了流体的透性和流动特性.
- 这些发现为设计微流体设备提供了经过验证的框架,用于优化流体环境的特定支架架构.
- 这项研究通过为生物医学应用提供量身定制的微流体设计,推动了组织工程的发展.
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