材料科学
生物相容性
聚氨酯
执行机构
墨水池
聚乙二醇
组织工程
纳米技术
自愈水凝胶
脚手架
数字光处理
3D打印
制作
计算机科学
化学工程
生物医学工程
复合材料
高分子化学
工程类
替代医学
病理
医学
投影机
人工智能
冶金
计算机视觉
作者
Hossein Goodarzi Hosseinabadi,Arpan Biswas,Anant Bhusal,Ali Yousefinejad,Aastha Lall,Wolfram‐Hubertus Zimmermann,Amir K. Miri,Leonid Ionov
出处
期刊:Small
[Wiley]
日期:2023-09-28
被引量:2
标识
DOI:10.1002/smll.202306387
摘要
4D printing recently emerges as an exciting evolution of conventional 3D printing, where a printed construct can quickly transform in response to a specific stimulus to switch between a temporary variable state and an original state. In this work, a photocrosslinkable polyethylene-glycol polyurethane ink is synthesized for light-assisted 4D printing of smart materials. The molecular weight distribution of the ink monomers is tunable by adjusting the copolymerization reaction time. Digital light processing (DLP) technique is used to program a differential swelling response in the printed constructs after humidity variation. Bioactive microparticles are embedded into the ink and the improvement of biocompatibility of the printed constructs is demonstrated for tissue engineering applications. Cell studies reveal above 90% viability in 1 week and ≈50% biodegradability after 4 weeks. Self-folding capillary scaffolds, dynamic grippers, and film actuators are made and activated in a humid environment. The approach offers a versatile platform for the fabrication of complex constructs. The ink can be used in tissue engineering and actuator applications, making the ink a promising avenue for future research.
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