Manufacturing method of self-repairing hydrogel fibers

A hydrogel, self-healing technology, applied in the direction of fiber chemical characteristics, textiles and papermaking, single-component synthetic polymer rayon, etc., can solve the unsatisfactory requirements of use, low gel strength, slow water absorption, etc. Problems, to achieve excellent mechanical properties, improve mechanical properties, enhance the performance of the effect

Inactive Publication Date: 2019-02-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrogels usually have disadvantages such as low gel strength, poor toughness, and slow water absorption, which cannot meet the requirements of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1. Dissolving polyvinyl alcohol: Add 1.2 g of polyvinyl alcohol into 6.8 ml of deionized water, place it in a water bath environment, heat it in a water bath to 75°C, and stir vigorously for 2 hours to make the polyvinyl alcohol soluble in deionized water. Then let it stand for use after confirming that the polyvinyl alcohol is completely dissolved.

[0032] Step 2. Add 0.85g of acrylamide and 1.85g of acrylic acid to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be uniformly dispersed in the polyvinyl alcohol solution with a certain viscosity, and ultrasonically dispersed 40min, ultrasound 5min pause 3min, standby.

[0033] Step 3: Add potassium persulfate (650 mg / ml) to the solution in the above step 2 as the initiator for the reaction and 55.6 mg of N,N-methylenebisacrylamide as the cross-linking agent for chemical cross-linking of the hydrogel .

[0034] Step 4. Pour the solution prepa...

Embodiment 2

[0038] Step 1. Dissolving polyvinyl alcohol: Add 1.2 g of polyvinyl alcohol into 6.8 ml of deionized water, place it in a water bath environment, heat it in a water bath to 75°C, and stir vigorously for 2 hours to make the polyvinyl alcohol soluble in deionized water. Then let it stand for use after confirming that the polyvinyl alcohol is completely dissolved.

[0039] Step 2. Add 0.992g of acrylamide and 1.668g of acrylic acid to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be uniformly dispersed in the polyvinyl alcohol solution with a certain viscosity, and ultrasonically dispersed 20min, ultrasound 5min pause 3min, standby.

[0040] Step 3: Add potassium persulfate (650 mg / ml) to the solution in the above step 2 as the initiator for the reaction and 55.6 mg of N,N-methylenebisacrylamide as the cross-linking agent for chemical cross-linking of the hydrogel ;

[0041]Step 4. Pour the solution prep...

Embodiment 3

[0045] Step 1. Dissolving polyvinyl alcohol: Add 1.2 g of polyvinyl alcohol into 6.8 ml of deionized water, place it in a water bath environment, heat it in a water bath to 75°C, and stir vigorously for 2 hours to make the polyvinyl alcohol soluble in deionized water. Then let it stand for use after confirming that the polyvinyl alcohol is completely dissolved.

[0046] Step 2. Add 0.834g of acrylamide and 1.946g of acrylic acid to the homogeneous solution of polyvinyl alcohol prepared in step 1. Through the action of mechanical stirring, the two can be uniformly dispersed in the polyvinyl alcohol solution with a certain viscosity, and ultrasonically dispersed 30min, ultrasound 5min pause 3min, stand-by.

[0047] Step 3. Add potassium persulfate (650 mg / ml) to the solution in the above step 2) as the initiator for the reaction and 55.6 mg of N,N-methylenebisacrylamide as the hydrogel for chemical cross-linking. agent;

[0048] Step 4. Pour the solution prepared in Step 3 int...

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PUM

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Abstract

The invention relates to the field of intelligent materials, and discloses a manufacturing method of self-repairing hydrogel fibers. The method includes taking polyvinyl alcohol, acrylamide and acrylic acid as monomers; performing chemical crosslinking and physical crosslinking to obtain obtain hydrogel with self-repairing capability; and implementing a wet spinning method to obtain conductive hydrogel fibers, wherein the hydrogel has better toughness and flexibility, and can be woven into fiber cloth or mixed with other fibers to form multiple functional fabrics.

Description

technical field [0001] The invention relates to the field of smart materials, in particular to a preparation method of self-healing hydrogel fibers. Background technique [0002] Hydrogel is a gel with water as the dispersion medium. A part of hydrophobic groups and hydrophilic residues are introduced into the water-soluble polymer with a network cross-linked structure. joint polymer. It is a polymer network system, which is soft in nature, can maintain a certain shape, and can absorb a large amount of water. PVA hydrogel has good non-toxicity and biocompatibility, and can be applied in daily life and even in biomedicine. [0003] Hydrogels usually have disadvantages such as low gel strength, poor toughness, and slow water absorption, which cannot meet the requirements of use. Therefore, the cross-linking method is used to enhance the mechanical properties such as the strength and toughness of the hydrogel to enhance the usability of the hydrogel and expand the applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/28C08J3/24C08J3/075C08F261/04C08F220/56C08F220/06C08F222/38
CPCC08F261/04C08J3/075C08J3/243C08J2351/00D01F6/28C08F220/56C08F220/06C08F222/385
Inventor 万军民帅卢屹峥胡智文王秉彭志勤
Owner ZHEJIANG SCI-TECH UNIV
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