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Article: 4D printing of highly printable and shape morphing hydrogels composed of alginate and methylcellulose

Title4D printing of highly printable and shape morphing hydrogels composed of alginate and methylcellulose
Authors
Keywords4D printing
Shape morphing hydrogel
Excellent printability
Alginate and methylcellulose
Issue Date2021
PublisherElsevier: Open Access Journals. The Journal's web site is located at http://www.elsevier.com/locate/matdes
Citation
Materials & Design, 2021, v. 205, p. article no. 109699 How to Cite?
Abstract4D printing of swellable/shrinkable hydrogels has been viewed as an appealing approach for fabricating dynamic structures for various biomedical applications. However, 4D printing of precise hydrogel structures is still highly challenging due to the relatively poor printability of hydrogels and high surface roughness of printed patterns, when micro extrusion-based 3D printers are used. In this study, a highly printable and shape morphing hydrogel was investigated for 4D printing by blending alginate (Alg) and methylcellulose (MC). The optimized Alg/MC hydrogel exhibited excellent rheological properties, extrudability and shape fidelity of printed structures. The printable Alg/MC hydrogel was 4D printed into a series of patterned 2D architectures which were encoded with anisotropic stiffness and swelling behaviors by strategically controlling the network density gradients vertical to the orientation of the patterned strips. By controlling the strip interspacing and angle, these 2D architectures could transform into various prescribed simple 3D morphologies (e.g., tube-curling and helix) and complex 3D morphologies (e.g., double helix and flowers) after immersion in a calcium chloride solution. This shape morphing Alg/MC hydrogel with excellent printability has high potential for 4D printing of delicate hydrogel patterns, which are increasingly needed in the tissue engineering, biomedical device and soft robotics fields.
Persistent Identifierhttp://hdl.handle.net/10722/301524
ISSN
2023 Impact Factor: 7.6
2023 SCImago Journal Rankings: 1.684
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLAI, J-
dc.contributor.authorYe, X-
dc.contributor.authorLiu, J-
dc.contributor.authorWang, C-
dc.contributor.authorLI, J-
dc.contributor.authorWang, X-
dc.contributor.authorMa, M-
dc.contributor.authorWang, M-
dc.date.accessioned2021-08-09T03:40:19Z-
dc.date.available2021-08-09T03:40:19Z-
dc.date.issued2021-
dc.identifier.citationMaterials & Design, 2021, v. 205, p. article no. 109699-
dc.identifier.issn0264-1275-
dc.identifier.urihttp://hdl.handle.net/10722/301524-
dc.description.abstract4D printing of swellable/shrinkable hydrogels has been viewed as an appealing approach for fabricating dynamic structures for various biomedical applications. However, 4D printing of precise hydrogel structures is still highly challenging due to the relatively poor printability of hydrogels and high surface roughness of printed patterns, when micro extrusion-based 3D printers are used. In this study, a highly printable and shape morphing hydrogel was investigated for 4D printing by blending alginate (Alg) and methylcellulose (MC). The optimized Alg/MC hydrogel exhibited excellent rheological properties, extrudability and shape fidelity of printed structures. The printable Alg/MC hydrogel was 4D printed into a series of patterned 2D architectures which were encoded with anisotropic stiffness and swelling behaviors by strategically controlling the network density gradients vertical to the orientation of the patterned strips. By controlling the strip interspacing and angle, these 2D architectures could transform into various prescribed simple 3D morphologies (e.g., tube-curling and helix) and complex 3D morphologies (e.g., double helix and flowers) after immersion in a calcium chloride solution. This shape morphing Alg/MC hydrogel with excellent printability has high potential for 4D printing of delicate hydrogel patterns, which are increasingly needed in the tissue engineering, biomedical device and soft robotics fields.-
dc.languageeng-
dc.publisherElsevier: Open Access Journals. The Journal's web site is located at http://www.elsevier.com/locate/matdes-
dc.relation.ispartofMaterials & Design-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subject4D printing-
dc.subjectShape morphing hydrogel-
dc.subjectExcellent printability-
dc.subjectAlginate and methylcellulose-
dc.title4D printing of highly printable and shape morphing hydrogels composed of alginate and methylcellulose-
dc.typeArticle-
dc.identifier.emailWang, M: memwang@hku.hk-
dc.identifier.authorityWang, M=rp00185-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.matdes.2021.109699-
dc.identifier.scopuseid_2-s2.0-85105252145-
dc.identifier.hkuros323905-
dc.identifier.volume205-
dc.identifier.spagearticle no. 109699-
dc.identifier.epagearticle no. 109699-
dc.identifier.isiWOS:000663557800007-
dc.publisher.placeUnited Kingdom-

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