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非常可扩展的物理交联水凝,用于高速3D生物打印.

Ye Eun Song1, Noah Eckman2, Samya Sen1

  • 1Department of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA.

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概括

这项研究引入了高度可伸缩的水凝生物墨水,以实现更快的3D生物打印. 优化水凝扩展性可以提高打印速度和特征分辨率,提高细胞活力和构造生成.

关键词:
通过3D打印打印3D打印.可扩展性的可扩展性.这是一种水凝.压力放松放松 压力放松粘性弹性 粘性弹性

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科学领域:

  • 生物材料科学 生物材料科学
  • 生物医学工程 生物医学工程
  • 类风病学 类风病学 类风病学

背景情况:

  • 由于生物相容性和细胞支持,水凝对于生物打印至关重要.
  • 印刷速度的限制阻碍了水凝生物链的效率,影响了细胞活力和结构复杂性.
  • 现有的水凝生物墨水往往缺乏适用于高速应用的必要特性.

研究的目的:

  • 开发一个高度可伸缩和剪切稀释的水凝生物油墨系统.
  • 为了研究水凝类风湿学,可扩展性和可打印性之间的关系.
  • 为了提高3D生物打印速度和精度,使用先进的水凝配方.

主要方法:

  • 物理交叉连接的水凝是使用含有表面活性剂或环极素的疏水性修饰纤维素制成的.
  • 风病学性质,包括剪切稀释行为,粘性弹性和压力放松,都是由成分调节的.
  • 扩展性是通过测量扩展性应变到断裂值来量化.
  • 通过将可扩展性与打印速度和特征大小相关联来评估可打印性.

主要成果:

  • 水凝系统表现出高剪切稀释行为和可调节的粘性弹性.
  • 延伸式应变至断裂值达到了2000%,表明显著的延伸性.
  • 增加水凝扩展性与更快的打印速度和更小的特征尺寸直接相关.
  • 与现有的水凝生物油墨相比,速度指数实现了5000倍以上的提升.

结论:

  • 优化水凝扩展性对于推进高速3D生物打印至关重要.
  • 开发的水凝系统为高效准确的生物打印提供了一个有前途的平台.
  • 这项工作为提高细胞活力和生物打印应用中复杂结构生成铺平了道路.