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A kind of ternary cross-linked hydrogel electrolyte, preparation method and application thereof

A cross-linked hydrogel and electrolyte technology, applied in the field of functional polymers, can solve the problems of poor self-healing performance and inconvenient preparation methods, and achieve the effects of easy operation, good biocompatibility, and simple process

Active Publication Date: 2020-08-25
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a ternary crosslinked hydrogel electrolyte, a preparation method and its application, and solve the problems of poor self-repair performance and inconvenient preparation methods in the above-mentioned background technology

Method used

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  • A kind of ternary cross-linked hydrogel electrolyte, preparation method and application thereof
  • A kind of ternary cross-linked hydrogel electrolyte, preparation method and application thereof
  • A kind of ternary cross-linked hydrogel electrolyte, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0026] (1) Add 1g 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-helical bisindane (TTS), 1g boric acid, 1g hydrogen Potassium oxide was dissolved in 25 g of distilled water and ultrasonically dispersed for 30 minutes.

[0027] (2) The above solution was heated and reacted at 90° C. for 2 h to obtain a pink dispersion.

[0028] (3) Dissolve 10 g of PVA in 63 g of water in an oil bath at 98°C.

[0029] (4) At 90°C, slowly add the above-mentioned dispersion liquid into the polyvinyl alcohol aqueous solution.

[0030] (5) Stir the reaction in an oil bath at a temperature of 90° C. for 1 hour. The sample was cooled to obtain a light brown hydrogel.

Embodiment 2

[0032] (1) Add 3g of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-helical bisindane (TTS), 1g of boric acid, 1g of hydrogen Potassium oxide was dissolved in 25 g of distilled water and ultrasonically dispersed for 30 minutes.

[0033] (2) The above solution was heated and reacted at 90° C. for 2 h to obtain a pink dispersion.

[0034] (3) Dissolve 10 g of PVA in 60 g of water in an oil bath at 98°C.

[0035] (4) At 90°C, slowly add the above-mentioned dispersion liquid into the polyvinyl alcohol aqueous solution.

[0036] (5) Stir the reaction in an oil bath at a temperature of 90° C. for 1 hour. The sample was cooled to obtain a light brown hydrogel.

Embodiment 3

[0038] (1) Add 4g of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-helical bisindane (TTS), 1g of boric acid, 1g of hydrogen Potassium oxide was dissolved in 25 g of distilled water and ultrasonically dispersed for 30 minutes.

[0039] (2) The above solution was heated and reacted at 90° C. for 2 h to obtain a pink dispersion.

[0040] (3) Dissolve 10 g of PVA in 59 g of water in an oil bath at 98°C.

[0041] (4) At 90°C, slowly add the above-mentioned dispersion liquid into the polyvinyl alcohol aqueous solution.

[0042] (5) Stir the reaction in an oil bath at a temperature of 90° C. for 1 hour. The sample was cooled to obtain a light brown hydrogel.

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Abstract

Disclosed in the present invention are a ternary crosslinked hydrogel electrolyte, a preparation method and an application thereof. Using polyvinyl alcohol, a dicatechol derivative, boric acid, potassium hydroxide and water as raw materials, using a condensation reaction between the boric acid and an O-hydroxy group of dicatechol, obtaining a macromolecule crosslinking agent D-B, and using same to crosslink the polyvinyl alcohol, forming a cross-linked network structure and obtaining a rapidly self-healing hydrogel. The synthesis method has simple techniques and mild conditions, is easy to operate, and a product does not require post-processing. By means of changing amounts used of polyvinyl alcohol and crosslinking agent, it is possible to obtain hydrogel electrolytes having different self-healing functionality, mechanical strength and electrical conductivity; said hydrogels may generate adhesiveness and lose adhesiveness under electrostimulation, and adhesive responsiveness may be regulated by means of adjusting electrostimulation time and voltage magnitude. The present self-healing hydrogel has important applications in areas such as soft robotics, artificial ligaments, flexible devices, surface-responsive materials, wall-climbing robots, controllable surface coatings and automobile smart sensors.

Description

technical field [0001] The invention belongs to the field of functional polymers, and in particular relates to a ternary crosslinked hydrogel electrolyte, a preparation method and an application thereof. Background technique [0002] Conductive hydrogels combine the advantages of electrolyte solutions and hydrogels, and have great application prospects in many fields. After the traditional hydrogel is traumatized, its various properties tend to decline a lot. And due to the existence of cracks, the internal structure of the hydrogel will be gradually destroyed, resulting in the loss of function and the reduction of the life of the hydrogel. Hydrogels with self-healing function can repair internal cracks spontaneously or under external stimuli to restore structure and function when they are damaged, thereby prolonging their service life. This self-healing conductive hydrogel has broad application prospects in artificial ligaments, flexible electronics, surface-responsive ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08L29/04C08K3/38C08K5/13
CPCC08J3/075C08J2329/04C08K3/38C08K5/13
Inventor 袁丛辉黄俊文戴李宗柳君蔡其鹏杨羽歆彭超华王迎珠陈国荣
Owner XIAMEN UNIV
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