Hydrogel composition for 3d printing, and 3d printing hydrogel prepared therefrom

2:

• The hydrogel composition for 3D printing of claim 1, wherein the acrylamide-based compound comprises acrylamide, metacrylamide, N-isopropylacrylamide (NIPAM), N-tert-butyl acrylamide, N,N-diethylacrylamide, N-ethylacrylamide, N-n-propylacrylamide, N,N-ethylmethylacrylamide, N-isopropylmethacrylamide, N-hydroxyethylacrylamide, N-(isobutoxymethyl) acrylamide, N-tert-butyl methacrylamide, N,N-diethylmethacrlamide, N-ethylmethacrylamide, or any combination thereof.

3:

• The hydrogel composition for 3D printing according to claim 1, wherein the hydrophilic thickener comprises carbomer, laponite, Pluronic copolymer, or any combination thereof.

4:

• The hydrogel composition for 3D printing according to claim 1, wherein the alkali compound comprises sodium hydroxide (NaOH), potassium hydroxide (KOH), triethanolamine, arginine, or any combination thereof.

5:

• The hydrogel composition for 3D printing according to claim 1, wherein the composition further comprises one or more biocompatible polymers selected from the group consisting of natural polymers and synthetic polymers.

6:

• The hydrogel composition for 3D printing according to claim 5, wherein the natural polymer comprises cellulose, algin, alginic acid, alginate, hyaluronic acid, polypeptide, protein, gelatin, collagen, albumin, dextran, starch, casein, chitin derivative, chitosan, or any combination thereof.

7:

• The hydrogel composition for 3D printing according to claim 5, wherein the synthetic polymer comprises polyethylene, polyethylene glycol, polycaprolactone, polyalkyl carbonate, polyamino acid, polyhydroxybutyric acid, polyorthoester, polyanhydride, Pluronic, polylactide, polyglycolide, polybutylene succinate, poly(3-hydroxybutyrate-co-3-hydroxyvalerate), polybutylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalene, polylactide-co-glycolide, (polylactide-co-glycolide)-glucose, methoxy polyethylene glycol-(polycaprolactone-co-polylactide), or any combination thereof.

8:

• The hydrogel composition for 3D printing according to claim 1, wherein the composition further comprises a crosslinking agent and an initiator.

9:

• The hydrogel composition for 3D printing according to claim 1, wherein the acrylamide-based compound is contained in an amount of 20 to 60 parts by weight based on 100 parts by weight of the solvent.

10:

• The hydrogel composition for 3D printing according to claim 1, wherein the hydrophilic thickener is contained in an amount of 1 to 7 parts by weight based on 100 parts by weight of the solvent.

11:

• The hydrogel composition for 3D printing according to claim 1, wherein the alkali compound is contained in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the solvent.

12:

• The hydrogel composition for 3D printing according to claim 5, wherein the biocompatible polymer is contained in an amount of 0.1 to 6 parts by weight based on 100 parts by weight of the solvent.

13:

• The hydrogel composition for 3D printing according to claim 1, wherein the hydrogel composition for 3D printing is used for Direct Ink Writing (DIW) type 3D printing.

14:

• A 3D printing hydrogel formed using the composition according to claim 1.

15:

• The 3D printing hydrogel according to claim 14, wherein an elastic modulus of the 3D printing hydrogel is 10 to 300 kPa.

16:

• The 3D printing hydrogel according to claim 14, wherein a tensile strength of the 3D printing hydrogel is 100 to 1,200 kPa.

17:

• The 3D printing hydrogel according to claim 14, wherein the tensile of the 3D printing hydrogel is 0.1 to 15.0 MJ/m3.

18:

• The 3D printing hydrogel according to claim 14, wherein the 3D printing hydrogel is an artificial blood vessel.