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US 12,390,556 B2Granted
Nanocomposite materials comprising cationic nanoparticles and anionic polymers useful in methods for 3D printing thereof
AssigneeETH Zurich
InventorsMihyun Lee, Marcy Zenobi-Wong, Jin Chang
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Abstract
The present technology provides nanocomposite compositions that include about 0.1 wt. % to about 40 wt. % of nanoparticles having a net cationic charge by weight of the composition; about 0.1 wt. % to about 50 wt. % of one or more gelling agents by weight of the composition; and a solvent that includes a protic solvent. Methods of preparing a three-dimensional structure via the nanocomposite composition are also disclosed.
Claims19
A nanocomposite hydrogel composition comprising:
- about 1 wt. % to about 10 wt. % of nanoparticles by weight of the composition;
- about 1 wt. % to about 10 wt. % of one or more gelling agents by weight of the composition, wherein the one or more gelling agents comprise alginate, alginate sulfate, gellan gum, acylated gellan gum, gellan sulfate, or a combination of any two or more thereof, wherein a weight ratio of the nanoparticles to the one or more gelling agents is about 1:20 to about 20:1;
- and
- a solvent comprising a protic solvent;
- wherein the nanoparticles have a net cationic charge, and the nanoparticles interact electrostatically with the one or more gelling agents to form the nanocomposite hydrogel composition.
2 more elements
Dependencies are inferred from the claim text.