Preparation method for water-loss-resistant ionic conductive gelatin hydrogel

Patent metadata

Field	Value
Publication number	US-12404375-B2
Application number	US-202519075743-A
Country	US
Kind code	B2
Filing date	Mar 10, 2025
Priority date	Mar 27, 2023
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

Disclosed in the present invention is a preparation method for a water-loss-resistant ionic conductive gelatin hydrogel, including: adding a gelatin into deionized water for soaking and swelling, and then placing the gelatin in a water bath and carrying out magnetic stirring to obtain a gelatin solution; adding sodium pyrrolidone carboxylate into the gelatin solution to carry out treatment to obtain a gelatin-sodium pyrrolidone carboxylate mixed solution; and cooling the gelatin-sodium pyrrolidone carboxylate mixed solution at a certain temperature to obtain a gelatin-sodium pyrrolidone carboxylate hydrogel.

First claim

What is claimed is:

1. A preparation method for water-loss-resistant ionic conductive gelatin hydrogel, wherein the preparation method comprising steps and conditions as follows:
Step 1: adding a predetermined amount of gelatin to deionized water, that is, soaking the gelatin in the deionized water so that the gelatin swells for a predetermined period of time, and causing the gelatin to swell and place the gelatin in a water bath and performing stirring with a magnetic force in the water bath at a predetermined temperature for a predetermined period of time to obtain a gelatin solution;
Step 2: obtaining a gelatin-sodium pyrrolidone carboxylate mixed solution in a process of adding sodium pyrrolidone carboxylate to the gelatin solution; and
Step 3: pouring the gelatin-sodium pyrrolidone carboxylate mixed solution into a mold to be cooled at a predetermined temperature for a predetermined period of time to obtain the water-loss-resistant ionic conductive gelatin hydrogel.

2. The preparation method for the water-loss-resistant ionic conductive gelatin hydrogel according to claim 1 , wherein, in the Step 1, a concentration of the gelatin after the deionized water is added is 15 wt % to 20 wt %, a soaking period of time of the gelatin is 30 minutes to 60 minutes, a water bath temperature is 50° C. to 55° C., and a stirring period of time is 60 minutes to 120 minutes.

3. The preparation method for the water-loss-resistant ionic conductive gelatin hydrogel according to claim 1 , wherein, in the Step 2, a sodium pyrrolidone carboxylate solution is added to the gelatin solution, then a mixed solution is placed in a water bath at a predetermined temperature and stirred with magnetic force for a period of time to obtain the gelatin-sodium pyrrolidone carboxylate mixed solution.

4. The preparation method for the water-loss-resistant ionic conductive gelatin hydrogel according to claim 3 , wherein, in the Step 2, a concentration of the sodium pyrrolidone carboxylate in the gelatin-sodium pyrrolidone carboxylate mixed solution is 5 wt % to 40 wt %, the temperature of the water bath is 50° C. to 55° C., and the period of time for stirring is 60 minutes to 120 minutes.

5. The preparation method for the water-loss-resistant ionic conductive gelatin hydrogel according to claim 1 , wherein, in the Step 3, a cooling temperature is 10° C. to 20° C., and the period of time for cooling is 60 minutes to 120 minutes.

Assignees

• Univ Zhejiang

Inventors

• Ying Yibin
• Lan Lingyi
• Ping Jianfeng

Classifications

• C08K5/3415

  Five-membered rings · CPC title

• C08J2389/00

  Characterised by the use of proteins; Derivatives thereof · CPC title

• C08J3/075 Primary

  Macromolecular gels · CPC title