US 12,390,556 B2
Nanocomposite materials comprising cationic nanoparticles and anionic polymers useful in methods for 3D printing thereof
Mihyun Lee, Zürich (CH); Marcy Zenobi-Wong, Zürich (CH); and Jin Chang, Zürich (CH)
Assigned to ETH ZÜRICH, Zürich (CH)
Filed by ETH ZÜRICH, Zürich (CH)
Filed on Jun. 5, 2018, as Appl. No. 16/000,679.
Claims priority of application No. PCT/IB2017/053845 (WO), filed on Jun. 27, 2017.
Prior Publication US 2019/0010288 A1, Jan. 10, 2019
Int. Cl. B33Y 30/00 (2015.01); A61L 27/38 (2006.01); A61L 27/44 (2006.01); A61L 27/52 (2006.01); A61L 27/54 (2006.01); B33Y 70/00 (2020.01); C08G 73/02 (2006.01); C08K 3/02 (2006.01); C08L 1/02 (2006.01); C09D 11/03 (2014.01); C09D 11/38 (2014.01); A61L 27/18 (2006.01); A61L 27/26 (2006.01); B05D 5/00 (2006.01); B82Y 40/00 (2011.01); C08G 83/00 (2006.01)
CPC A61L 27/3804 (2013.01) [A61L 27/3813 (2013.01); A61L 27/3817 (2013.01); A61L 27/3826 (2013.01); A61L 27/3834 (2013.01); A61L 27/446 (2013.01); A61L 27/52 (2013.01); A61L 27/54 (2013.01); B33Y 70/00 (2014.12); C08G 73/02 (2013.01); C08K 3/02 (2013.01); C08L 1/02 (2013.01); C09D 11/03 (2013.01); C09D 11/38 (2013.01); A61L 27/18 (2013.01); A61L 27/26 (2013.01); A61L 2300/258 (2013.01); A61L 2300/414 (2013.01); A61L 2300/426 (2013.01); A61L 2300/428 (2013.01); A61L 2400/12 (2013.01); B05D 5/00 (2013.01); B33Y 30/00 (2014.12); B82Y 40/00 (2013.01); C08G 83/003 (2013.01); C08K 2003/023 (2013.01); C08L 2203/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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.