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4D-Printable Photocrosslinkable Polyurethane-Based Inks for Tissue Scaffold and Actuator Applications

Title data

Goodarzi Hosseinabadi, Hossein ; Biswas, Arpan ; Bhusal, Anant ; Yousefinejad, Ali ; Lall, Aastha ; Zimmermann, Wolfram-Hubertus ; Miri, Amir K. ; Ionov, Leonid:
4D-Printable Photocrosslinkable Polyurethane-Based Inks for Tissue Scaffold and Actuator Applications.
In: Small. Vol. 20 (2024) Issue 6 . - 2306387.
ISSN 1613-6829
DOI: https://doi.org/10.1002/smll.202306387

Official URL: Volltext

Project information

Project financing: Alexander von Humboldt-Stiftung
Fellowship AvH DFG IO 68/16-1, IO 68/17-1, TRR 225 project number 326998133 subproject A08 VW (Experiment!)

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: No
Keywords: 4D printing; bi-modal molecular weight distribution; biocompatiblepolyurethane ink; hydrogel digital light processing (DLP) printing
Institutions of the University: Faculties > Faculty of Engineering Science > Professor Biofabrication > Professor Biofabrication - Univ.-Prof. Dr. Leonid Ionov
Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Professor Biofabrication
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 670 Manufacturing
Date Deposited: 04 Oct 2023 06:18
Last Modified: 12 Feb 2024 06:39
URI: https://eref.uni-bayreuth.de/id/eprint/87022