Direct ink writing of aloe vera/cellulose nanofibrils bio-hydrogels
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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12
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Carbohydrate Polymers, Volume 266
Abstract
Direct-ink-writing (DIW) of hydrogels has become an attractive research area due to its capability to fabricate intricate, complex, and highly customizable structures at ambient conditions for various applications, including biomedical purposes. In the current study, cellulose nanofibrils reinforced aloe vera bio-hydrogels were utilized to develop 3D geometries through the DIW technique. The hydrogels revealed excellent viscoelastic properties enabled extruding thin filaments through a nozzle with a diameter of 630 μm. Accordingly, the lattice structures were printed precisely with a suitable resolution. The 3D-printed structures demonstrated significant wet stability due to the high aspect ratio of the nano- and microfibrils cellulose, reinforced the hydrogels, and protected the shape from extensive shrinkage upon drying. Furthermore, all printed samples had a porosity higher than 80% and a high-water uptake capacity of up to 46 g/g. Altogether, these fully bio-based, porous, and wet stable 3D structures might have an opportunity in biomedical fields.Description
Funding Information: The authors would like to acknowledge funding support by the Academy of Finland's Biofuture 2025 program under project No. 2228357-4 (3D Manufacturing of Novel Biomaterials) and No. 327248 (ValueBiomat). This work made use of the facilities of Aalto University's Nanomicroscopy Center. The authors also would like to acknowledge the discussions with Dr. Janika Lehtonen and Dr. Arun Teotia. Funding Information: The authors would like to acknowledge funding support by the Academy of Finland's Biofuture 2025 program under project No. 2228357-4 (3D Manufacturing of Novel Biomaterials) and No. 327248 (ValueBiomat). This work made use of the facilities of Aalto University's Nanomicroscopy Center. The authors also would like to acknowledge the discussions with Dr. Janika Lehtonen and Dr. Arun Teotia. Publisher Copyright: © 2021 The Author(s)
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Bani Asadi, H, Ajdary, R, Trifol Guzman, J, Rojas, O J & Seppälä, J 2021, 'Direct ink writing of aloe vera/cellulose nanofibrils bio-hydrogels', Carbohydrate Polymers, vol. 266, 118114. https://doi.org/10.1016/j.carbpol.2021.118114