关于颗粒状凝粘弹性特性及其作为嵌入式生物打印中支持材料的性能之间的关系
Noy Hen1,2, Elinor Josef3, Maya Davidovich-Pinhas4
1Department of Chemical Engineering, Technion─Israel Institute of Technology, Haifa 32000, Israel.
ACS biomaterials science & engineering
|September 30, 2024
概括
这项研究揭示了微凝的特性如何影响颗粒状水凝的风湿学和生物打印. 更硬,高度包装的微凝提高了打印保真度,并减少了细胞丝的收缩.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 类风病学 类风病学 类风病学
背景情况:
- 颗粒状水凝在3D生物打印中被用作支持材料.
- 微凝属性,水凝类风学和打印性能之间的关系尚未完全理解.
研究的目的:
- 为了研究k-carrageenan颗粒状水凝的风湿性质.
- 确定微凝硬度和包装密度如何影响宏观粘弹性和生物打印性能.
主要方法:
- 用小幅度和大幅度的振荡式剪切测量来描述病学.
- 微凝的刚度和包装密度有系统地变化.
- 在生物打印实验中评估了打印保真度和细胞线程收缩.
主要成果:
- 储存模块取决于包装密度,而不仅仅是微凝的刚度.
- 增加的微凝刚度降低了能量消耗,并提高了固体-流体过渡点.
- 低包装密度降低了打印质量;硬的微凝增加了丝材粗度.
- 高度包装的刚性微凝将细胞纤维的印刷后收缩量降到最低.
结论:
- 微凝的特性显著影响颗粒状水凝的质学和生物打印结果.
- 优化微凝硬度和包装密度对于设计有效的生物打印支床至关重要.
- 这项研究为合理设计特定生物打印应用的颗粒状水凝提供了洞察力.
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