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Ternary cross-linked hydrogel electrolyte, preparation method and applications thereof

A technology for cross-linking hydrogels and electrolytes, 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: 2019-12-31
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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  • Ternary cross-linked hydrogel electrolyte, preparation method and applications thereof
  • Ternary cross-linked hydrogel electrolyte, preparation method and applications thereof
  • Ternary cross-linked hydrogel electrolyte, preparation method and applications thereof

Examples

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

The invention discloses a ternary cross-linked hydrogel electrolyte, a preparation method and applications thereof, wherein polyvinyl alcohol, a bis-catechol derivative, boric acid, potassium hydroxide and water are used as raw materials, a macromolecular cross-linking agent D-B is obtained through a condensation reaction between the boric acid and the o-hydroxyl in the bis-catechol, and the polyvinyl alcohol is cross-linked with the macromolecular cross-linking agent D-B to form a cross-linked network structure, so that the rapid self-repairing hydrogel is obtained. According to the invention, the synthesis method has characteristics of simple process, mild condition, easy operation and no product post-treatment; by changing the use amounts of the polyvinyl alcohol and the cross-linking agent, the hydrogel electrolytes with different self-repairing capacities, mechanical strengths and conductivities are obtained, and can generate viscosity and lose viscosity under electrical stimulation, wherein the viscosity responsiveness can be regulated by regulating the electrical stimulation time and the voltage; and the self-repairing hydrogel has important applications in the fields of soft robots, artificial ligaments, flexible devices, surface response materials, wall climbing robots, controllable coatings, automobile intelligent sensors and the like.

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 Applications(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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