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Dual Crosslinked Antioxidant Mixture of Poly(vinyl alcohol) and Cerium Oxide Nanoparticles as a Bioink for 3D Bioprinting

Rizwana, N and Maslekar, N and Chatterjee, K and Yao, Y and Agarwal, V and Nune, M (2023) Dual Crosslinked Antioxidant Mixture of Poly(vinyl alcohol) and Cerium Oxide Nanoparticles as a Bioink for 3D Bioprinting. In: ACS Applied Nano Materials .

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Official URL: https://doi.org/10.1021/acsanm.3c02962


Three-dimensional (3D) bioprinting has made it possible to fabricate structures with intricate morphologies and architectures, which is considered difficult to do when using other conventional techniques like electrospinning. Although the 3D printing of thermoplastics has seen a huge boom in the past few years, it has been challenging to translate this technology to cell-based printing. A major limitation in bioprinting is the lack of inks that allow for the printing of 3D structures that meet the biological requirements of a specific organ or tissue. A bioink is a viscous polymer solution that cells are incorporated into before printing. Therefore, a bioink must have specific characteristics to ensure both good printability and biocompatibility. Despite the progress that has been made in bioprinting, achieving a balance between these two properties has been difficult. In this work, we developed a multimodal bioink that serves as both a cell carrier and a free radical scavenger for treating peripheral nerve injury. This bioink comprises poly(vinyl alcohol) (PVA) and cerium oxide nanoparticles (also called nanoceria (NC)) and was developed with a dual crosslinking method that utilizes citric acid and sodium hydroxide. By employing this dual crosslinking method, good printability of the bioink and shape fidelity of the bioprinted structure were achieved. Additionally, a cell viability study demonstrated that the cells remained compatible and viable even after they underwent the printing process. The combination of this PVA/NC bioink and the dual crosslinking method proved to be effective in enhancing printability and cell biocompatibility for extrusion-based bioprinting applications. © 2023 The Authors. Published by American Chemical Society.

Item Type: Journal Article
Publication: ACS Applied Nano Materials
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to author
Keywords: 3D printing; Biocompatibility; Cells; Cerium oxide; Cytology; Free radicals; Nanoparticles; Oxides; Polyvinyl alcohols; Sodium hydroxide, 3d bioprinting; Bioink; Bioprinting; Cerium oxide nanoparticle; Dual crosslinking; Nano-ceria; Poly (vinyl alcohol) (PVA); Poly(vinyl alcohol); Poly(vinyl alcohol) (PVA), Antioxidants
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 04 Mar 2024 09:49
Last Modified: 04 Mar 2024 09:49
URI: https://eprints.iisc.ac.in/id/eprint/84397

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