Ink formulation, method of producing the same and uses of the ink formulation
AssigneeAbo Akademi
InventorsXiaoju Wang, Yury Brusentsev, Wenyang Xu, Chunlin Xu, Lars Wågberg, Oskar Backman, Stefan Willför
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Abstract
The present invention relates to ink formulations based on methacrylated cellulose nanofibrils. In particular, the present invention concerns ink formulations for 3D printing, comprising a hydrogel containing methacrylated cellulose nanofibrils and preferably a cross-linking agent, optionally together with biological material, methods of producing such ink formulations, as well as uses thereof for, e.g., preparing 3D hydrogel scaffolds for cell culture and drug screening.
Claims36
A hydrogel formulation, comprising methacrylated cellulose nanofibrils and water, wherein the methacrylated cellulose nanofibrils have a charge density of 1.2 mmol/g or lower.
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A method of producing an ink formulation for 3D printing, comprising the steps of:
- providing an aqueous gel of methacrylated cellulose nanofibrils,
- optionally providing at least one crosslinking agent,
- optionally providing an aqueous dispersion of biological material, and
- mixing the gel, the crosslinking agent, if present, and the aqueous dispersion of biological material, if present, to form an ink composition,
- wherein the methacrylated cellulose nanofibrils have a charge density of 1.2 mmol/g or lower.
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Dependencies are inferred from the claim text.