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Crystallization-induced gelling as a method to 4D print low-water-content non-isocyanate polyurethane hydrogels

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Fanjul-Mosteirín, Noé, Aguirresarobe, Robert, Sadaba, Naroa, Larrañaga, Aitor, Marin, Edurne, Martin, Jaime, Ramos-Gomez, Nicolas, Arno, Maria C., Sardon, Haritz and Dove, Andrew P. (2021) Crystallization-induced gelling as a method to 4D print low-water-content non-isocyanate polyurethane hydrogels. Chemistry of Materials, 33 (18). pp. 7194-7202. doi:10.1021/acs.chemmater.1c00913

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Official URL: https://doi.org/10.1021/acs.chemmater.1c00913

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Abstract

The use of three-dimensional (3D) printable hydrogels for biomedical applications has attracted considerable attention as a consequence of the ability to precisely define the morphology of the printed object, allowing patients’ needs to be targeted. However, the majority of hydrogels do not possess suitable mechanical properties to fulfill an adequate rheological profile for printability, and hence, 3D printing of cross-linked networks is challenging and normally requires postprinting modifications to obtain the desired scaffolds. In this work, we took advantage of the crystallization process of poly(ethylene glycol) to print non-isocyanate poly(hydroxyurethane) hydrogels with tunable mechanical properties. As a consequence of the crystallization process, the hydrogel modulus can be tuned up to 3 orders of magnitude upon heating up to 40 °C, offering an interesting strategy to directly 3D-print hydrogels without the need of postprinting cross-linking. Moreover, the absence of any toxicity makes these materials ideal candidates for biomedical applications.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
R Medicine > R Medicine (General)
T Technology > TP Chemical technology
T Technology > TS Manufactures
Divisions: Faculty of Science > Chemistry
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Three-dimensional printing , Colloids, Polyethylene glycol , Crystallization , Crystallization -- Industrial applications, Biomedical engineering, Colloids in medicine
Journal or Publication Title: Chemistry of Materials
Publisher: American Chemical Society (ACS)
ISSN: 1520-5002
Official Date: 28 September 2021
Dates:
DateEvent
28 September 2021Published
14 September 2021Available
14 September 2021Accepted
Volume: 33
Number: 18
Page Range: pp. 7194-7202
DOI: 10.1021/acs.chemmater.1c00913
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Copyright Holders: Copyright © 2021 The Authors. Published by American Chemical Society
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
SUSPOL-EJD 642671 European Commissionhttp://dx.doi.org/10.13039/501100000780
UNSPECIFIEDUniversity Of Birminghamhttp://dx.doi.org/10.13039/501100000855
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