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DLP 3D Printing Meets Lignocellulosic Biopolymers: Carboxymethyl Cellulose Inks for 3D Biocompatible Hydrogels
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.
Politecn Torino, Dept Mech & Aerosp Engn, Cso Duca Abruzzi 24, I-10129 Turin, Italy.;Politecn Torino, POLITO BIOMed LAB, I-10129 Turin, Italy..
Politecn Torino, Dept Mech & Aerosp Engn, Cso Duca Abruzzi 24, I-10129 Turin, Italy.;Politecn Torino, POLITO BIOMed LAB, I-10129 Turin, Italy..
Politecn Torino, POLITO BIOMed LAB, I-10129 Turin, Italy.;Politecn Torino, Dept Appl Sci & Technol, Cso Duca Abruzzi 24, I-10129 Turin, Italy..
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2020 (English)In: Polymers, E-ISSN 2073-4360, Vol. 12, no 8, article id 1655Article in journal (Refereed) Published
Abstract [en]

The development of new bio-based inks is a stringent request for the expansion of additive manufacturing towards the development of 3D-printed biocompatible hydrogels. Herein, methacrylated carboxymethyl cellulose (M-CMC) is investigated as a bio-based photocurable ink for digital light processing (DLP) 3D printing. CMC is chemically modified using methacrylic anhydride. Successful methacrylation is confirmed by(1)H NMR and FTIR spectroscopy. Aqueous formulations based on M-CMC/lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) photoinitiator and M-CMC/Dulbecco's Modified Eagle Medium (DMEM)/LAP show high photoreactivity upon UV irradiation as confirmed by photorheology and FTIR. The same formulations can be easily 3D-printed through a DLP apparatus to produce 3D shaped hydrogels with excellent swelling ability and mechanical properties. Envisaging the application of the hydrogels in the biomedical field, cytotoxicity is also evaluated. The light-induced printing of cellulose-based hydrogels represents a significant step forward in the production of new DLP inks suitable for biomedical applications.

Place, publisher, year, edition, pages
MDPI AG , 2020. Vol. 12, no 8, article id 1655
Keywords [en]
hydrogel, methacrylated CMC, 3D printing, DLP
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-282280DOI: 10.3390/polym12081655ISI: 000568012600001PubMedID: 32722423Scopus ID: 2-s2.0-85089485280OAI: oai:DiVA.org:kth-282280DiVA, id: diva2:1474046
Note

QC 20220530

Available from: 2020-10-07 Created: 2020-10-07 Last updated: 2024-01-17Bibliographically approved

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Melilli, GiuseppeHakkarainen, Minna

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