3D Printing of Gelled and Cross-Linked Cellulose Solutions; an Exploration of Printing Parameters and Gel Behaviour
| Autor: | Conan J. Fee, Thea Roughan, Sean Feast, Tim Huber, Hossein Najaf Zadeh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Fabrication
Materials science Human ear 0206 medical engineering education 3D printing Bioengineering 02 engineering and technology lcsh:Technology Article chemistry.chemical_compound Cellulose lcsh:QH301-705.5 Shear thinning Rheometry Polymer science business.industry lcsh:T 021001 nanoscience & nanotechnology 020601 biomedical engineering cellulose chemistry physical cross-linking lcsh:Biology (General) Sodium hydroxide bioprinting hydrogel Extrusion 0210 nano-technology business |
| Zdroj: | Bioengineering; Volume 7; Issue 2; Pages: 30 Bioengineering, Vol 7, Iss 30, p 30 (2020) Bioengineering |
| ISSN: | 2306-5354 |
| DOI: | 10.3390/bioengineering7020030 |
| Popis: | In recent years, 3D printing has enabled the fabrication of complex designs, with low-cost customization and an ever-increasing range of materials. Yet, these abilities have also created an enormous challenge in optimizing a large number of process parameters, especially in the 3D printing of swellable, non-toxic, biocompatible and biodegradable materials, so-called bio-ink materials. In this work, a cellulose gel, made out of aqueous solutions of cellulose, sodium hydroxide and urea, was used to demonstrate the formation of a shear thinning bio-ink material necessary for an extrusion-based 3D printing. After analysing the shear thinning behaviour of the cellulose gel by rheometry a Design of Experiments (DoE) was applied to optimize the 3D bioprinter settings for printing the cellulose gel. The optimum print settings were then used to print a human ear shape, without a need for support material. The results clearly indicate that the found settings allow the printing of more complex parts with high-fidelity. This confirms the capability of the applied method to 3D print a newly developed bio-ink material. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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