Freeform 3D printing using a continuous viscoelastic supporting matrix
authors Patricio, SG; Sousa, LR; Correia, TR; Gaspar, VM; Pires, LS; Luis, JL; Oliveira, JM; Mano, JF
nationality International
journal BIOFABRICATION
author keywords Embedded 3D printing; supporting materials; continuous matrix; freeform structures; hydrogels
keywords XANTHAN GUM; HYDROGELS; NETWORKS
abstract Embedded bio-printing has fostered significant advances toward the fabrication of soft complex tissue-like constructs, by providing a physical support that allows the freeform shape maintenance within the prescribed spatial arrangement, even under gravity force. Current supporting materials still present major drawbacks for up-scaling embedded 3D bio-printing technology towards tissue-like constructs with clinically relevant dimensions. Herein, we report a a cost-effective and widely available supporting material for embedded bio-printing consisting on a continuous pseudo-plastic matrix of xanthan-gum (XG). This natural polisaccharide exhibits peculiar rheological properties that have enabled the rapid generation of complex volumetric 3D constructs with out-of-plane features. The freedom of design within the three orthogonal axes through the independent and controlled bio-printing process opens new opportunities to produce on demand large arbitrary shapes for personalized medicine. Additionally, we have demonstrated the versatile functionality of XG as a photocurable gel reservoir to engineer perfused cell-laden hydrogel constructs, addressing other practical biomedical applications such as in vitro models and organ-on-chip platforms.
publisher IOP PUBLISHING LTD
issn 1758-5082
year published 2020
volume 12
issue 3
digital object identifier (doi) 10.1088/1758-5090/ab8bc3
web of science category Engineering, Biomedical; Materials Science, Biomaterials
subject category Engineering; Materials Science
unique article identifier WOS:000535962100001
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 8.213
5 year journal impact factor 8.251
category normalized journal impact factor percentile 93.55
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