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Preparation method of porous-structure double-layer gelatin hydrogel driver

A technology of hydrogel actuator and porous structure is applied in the field of intelligent actuator material of functional hydrogel, which can solve the problems of restricting the application of hydrogel and complicated operation mode of gel actuator, and achieve strong structural deformation ability and driving performance. Beneficial and extended application effect

Active Publication Date: 2022-02-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each driving cycle of the shape memory hydrogel actuators currently reported requires an external force to fix the gel into a temporary shape, and it is impossible to realize that the gel spontaneously transforms between the temporary shape and the original shape, so the gel actuator The operation method is relatively complicated, which greatly restricts the application of hydrogel in the field of actuators.

Method used

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  • Preparation method of porous-structure double-layer gelatin hydrogel driver
  • Preparation method of porous-structure double-layer gelatin hydrogel driver
  • Preparation method of porous-structure double-layer gelatin hydrogel driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a disordered porous structure double-layer gelatin hydrogel driver, the preparation process is as follows figure 1 As shown, it specifically includes the following steps:

[0032] (1) Preparation of gelatin solution: add 10 g of gelatin to 90 g of water, and magnetically stir for 60 min in a water bath at 60° C. to obtain a gelatin solution with a mass concentration of 10%;

[0033] (2) Preparation of solid gelatin: the gelatin solution is injected into the mold, and the mold is formed if figure 1 As shown in (a), it consists of upper and lower glass sheets and a silica gel gasket in the middle layer. Put a dust-free paper between the silica gel gasket and the lower glass sheet, and then use a needle to inject the gelatin solution prepared in step (1) into the mold , refrigerated at 4°C for 1 hour to obtain dust-free paper-solid gelatin (such as figure 1 (b) shown in (g), the gelatin molecular chains interpenetrate and solidify, making the liqu...

Embodiment 2

[0038] A method for preparing a double-layer gelatin hydrogel actuator with an ordered porous structure, the preparation process and structural changes are as follows figure 1 As shown, it specifically includes the following steps:

[0039] (1) Preparation of gelatin solution: add 10 g of gelatin to 90 g of water, and magnetically stir for 60 min in a water bath at 60° C. to obtain a gelatin solution with a mass concentration of 10%;

[0040] (2) Preparation of solid gelatin: the gelatin solution is injected into the mold, and the mold is formed if figure 1 As shown in (a), it consists of upper and lower glass sheets and a silica gel gasket in the middle layer. Put a dust-free paper between the silica gel gasket and the lower glass sheet, and then use a needle to inject the gelatin solution prepared in step (1) into the mold , refrigerated at 4°C for 1 hour to obtain dust-free paper-solid gelatin (such as figure 1 (b) shown in (g), the gelatin molecular chains interpenetrate...

Embodiment 3

[0044] A method for preparing a double-layer gelatin hydrogel actuator with an ordered porous structure, the preparation process and structural changes are as follows figure 1 As shown, it specifically includes the following steps:

[0045] (1) Preparation of gelatin solution: 5 g of gelatin was added to 95 g of water, and magnetically stirred for 30 min in a water bath at 60° C. to obtain a gelatin solution with a mass concentration of 5%;

[0046] (2) Preparation of solid gelatin: the gelatin solution is injected into the mold, and the mold is formed if figure 1 As shown in (a), it consists of upper and lower glass sheets and a silica gel gasket in the middle layer. Put a dust-free paper between the silica gel gasket and the lower glass sheet, and then use a needle to inject the gelatin solution prepared in step (1) into the mold , refrigerated at 4°C for 1 hour to obtain dust-free paper-solid gelatin (such as figure 1 (b) shown in (g), the gelatin molecular chains interpene...

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Abstract

The invention belongs to the field of intelligent driver materials of functional hydrogel, and particularly discloses a preparation method of a porous-structure double-layer gelatin hydrogel driver. The preparation method specifically comprises the following steps: (1) preparation of a gelatin solution: adding gelatin into water in proportion, and carrying out magnetic stirring in a water bath to obtain the gelatin solution; (2) preparation of solid gelatin: injecting the gelatin solution into a mold, and carrying out refrigerating to obtain dust-free paper-solid gelatin; (3) construction of a porous structure: freezing the preformed solid gelatin in a refrigerator to construct the porous structure; (4) cross-linking: soaking the gelatin hydrogel with the porous structure obtained in the step (3) in a cross-linking agent to obtain the gelatin hydrogel with the disordered porous structure. The gelatin hydrogel with the disordered and ordered porous structures is prepared by the method, and the application range of the hydrogel is greatly expanded.

Description

technical field [0001] The invention relates to the field of intelligent actuator materials of functional hydrogels, in particular to a method for preparing a porous structure double-layer gelatin hydrogel actuator Background technique [0002] At present, the research trend of artificial intelligence functional polymer materials has become one of several high-tech trends in the world. Hydrogel can be used as artificial intelligence functional polymer materials, and its research and development work is becoming increasingly active. Some hydrogels can respond to changes in external stimuli or environments, such as pH, electric field, phase change, temperature, ionic strength, etc., causing significant swelling or shrinkage of the polymer gel volume. This discontinuous volume change can be used as Sensors, actuators, switches, display devices and memory materials have broad application prospects in aerospace, bridges, construction, medical insurance and bionic engineering. ...

Claims

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Application Information

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IPC IPC(8): C08J9/40C08J9/12C08L89/00
CPCC08J9/40C08J9/125C08J2389/00
Inventor 刘爱萍郭平季善鹏许为中武小岗
Owner ZHEJIANG SCI-TECH UNIV
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