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Self-reinforced hybrid hydrogel used for artificial muscles and preparation method thereof

An artificial muscle and hydrogel technology, applied in the field of functional materials and biomaterials, can solve the problems of difficult self-enhancement of hydrogels, high cost, and complicated preparation process of high-strength hydrogels.

Inactive Publication Date: 2013-07-31
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is that the preparation process of high-strength hydrogel is complicated, the cost is high, and the hydrogel is difficult to self-reinforce, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1. A self-reinforced isopropylacrylamide / barium alginate hybrid hydrogel for artificial muscles and its preparation method

[0019] a) Adding 1% by volume of barium chloride aqueous solution with a mass percentage concentration of 10% to 10 g of acetone, adding Span-80, and then stirring rapidly for 0.5 h to form a uniform white emulsion;

[0020] b) Weigh divinylbenzene with a mass percentage of isopropylacrylamide of 0.03%, dissolve it in 68ml of deionized water, and after ultrasonically dispersing it, add 15g of isopropylacrylamide and 0.5 sodium alginate, and then add isopropylacrylamide Ammonium persulfate with 0.1% mass percentage of amide, after fully dissolving, add the white emulsion configured in step a) with 10% volume percentage of the total solution, and finally add sodium bisulfite and isopropyl acrylamide with 0.1% mass percentage of isopropylacrylamide Acrylamide mass percentage 0.01% tetramethylethylenediamine, after stirring evenly, pour this s...

Embodiment 2

[0022]Example 2. A self-reinforced diacetone acrylamide / copper alginate hybrid hydrogel for artificial muscles and its preparation method

[0023] a) adding 15% by volume to 10 g of toluene in an aqueous solution of copper sulfate with a concentration of 5% by mass, adding lecithin, and stirring rapidly for 2 hours to form a uniform white emulsion;

[0024] b) Weigh diisocyanate with a mass percentage of 0.15% of diacetone acrylamide, dissolve it in 68ml of deionized water, and ultrasonically disperse it evenly, then add 5g of diacetone acrylamide and 2g of sodium alginate, and then add 5% of diacetone acrylamide by mass Ammonium persulfate, after fully dissolving, add the white emulsion of step a) configuration of 10% by volume of the total solution, and finally add 5% of diacetone acrylamide by mass percent sodium bisulfite and 2% by mass of diacetone acrylamide Tetramethylethylenediamine, after stirring evenly, pour this solution in the mold, vacuum defoaming, in N 2 Under...

Embodiment 3

[0026] Example 3. A self-reinforced methacrylamide / zinc alginate hybrid hydrogel for artificial muscles and its preparation method

[0027] a) Adding 5% by volume to 10g of liquid paraffin is an aqueous solution of zinc chloride with a concentration of 50% by mass, adding twen-60, and stirring rapidly for 0.5h to become a uniform white emulsion;

[0028] b) Weigh N,N′-methylene bisacrylamide with a mass percentage of 0.15% of methacrylamide, dissolve it in 68ml of deionized water, and after ultrasonic dispersion is uniform, add 8g of methacrylamide and 1g of sodium alginate, and then Add 2% ammonium persulfate by mass percentage of methacrylamide, after fully dissolving, add the white emulsion configured in step a) with 5% by volume of the total solution, and finally add sodium bisulfite and 1% by mass percentage of methacrylamide Tetramethylethylenediamine with 1% mass percentage of methacrylamide, after stirring evenly, pour the solution into the mold, vacuum defoaming, and ...

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PUM

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Abstract

The invention relates to a self-reinforced hybrid hydrogel used for artificial muscles and a preparation method thereof. According to the invention, sodium alginate is used as a high-molecular skeleton, acrylamide and derivative thereof are used as polymerizable monomers, divinyl benzene, N,N'-methylene bis acrylamide or ethylene glycol dimethacrylate is used as a chemical cross-linking agent, an aqueous metal salt solution is used as an ion cross-linking agent, and then the hydrogel with high elasticity and high toughness is prepared. During a process of preparing the hydrogel, an organic matter emulsion containing metal ion aqueous solution is added. When the prepared hydrogel is stretched by external forces to a certain extent, the gel deforms to extrude the organic matter emulsion, and metal ions are released and then crosslinked with the sodium alginate in the hybrid gel, thereby substantially improving gel intensity and preventing gel fracture. The preparation method has advantages of good controllability, simple technology and low cost, the obtained hydrogel material can be self-reinforced, and is expected to be applied in fields of artificial cartilage, artificial muscle, flexible robot manufacture, etc.

Description

technical field [0001] The invention relates to a self-reinforcing hybrid hydrogel for artificial muscles and a preparation method thereof, belonging to the field of functional materials and biomaterials. Background technique [0002] Artificial muscles refer to materials that are driven by electric fields or chemically without mechanical devices. Materials currently used to prepare artificial muscles include polymer gels, conductive polymer materials, liquid crystal polymer materials, supramolecular systems, and metal-polymer composite materials. Among them, polymer gels have attracted widespread attention due to their good biocompatibility. Polymer gel is a multi-component system composed of a three-dimensional polymer network and a solvent. Environmental stimuli such as temperature, pH, electric field, solvent properties, light intensity and wavelength, pressure, ionic strength, ionic density and special chemical stimuli, etc. A polymer network that undergoes dramatic c...

Claims

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Application Information

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IPC IPC(8): C08J3/24C08L51/02C08F251/00A61L27/20A61L27/16A61L27/02A61L27/52
Inventor 赵孔银林贝贝阚伯红崔文葵刘春娇祁志强
Owner TIANJIN POLYTECHNIC UNIV
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