A kind of transparent conductive hydrogel with single-sided self-adhesion and its preparation method and application

A transparent conductive and hydrogel technology, applied in the field of hydrogel, can solve problems such as poor mechanical properties and inconvenient assembly and operation, achieve strong safety, improve test accuracy, and ensure accurate capture effects

Active Publication Date: 2022-07-05
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the existing conductive hydrogel or lack of tissue adhesion, need to rely on the help of additional tape; or have self-adhesion on both sides, inconvenient assembly operation, poor mechanical properties, etc., to truly meet the needs of flexible sensing The material accurately monitors the actual needs of various human movements

Method used

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  • A kind of transparent conductive hydrogel with single-sided self-adhesion and its preparation method and application
  • A kind of transparent conductive hydrogel with single-sided self-adhesion and its preparation method and application
  • A kind of transparent conductive hydrogel with single-sided self-adhesion and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 It is a schematic structural diagram of the transparent conductive hydrogel with single-sided self-adhesion prepared by the present invention, and the specific preparation process is as follows:

[0040] 1. Add 5.5 g of sodium dodecyl sulfate (SDS) to 40 ml of deionized water, and magnetically stir at 800 rpm for 30 min at 25°C to obtain clear solution A;

[0041] 2. Add 1.75ml of dodecyl methacrylate (LMA) to solution A, stir magnetically for 3h at 500 rpm at 25°C; then add 10g of acrylic acid (AAc), at 25°C at 500 rpm Stir magnetically for 20 min at a speed of 500 rpm until it is completely dissolved, then add 80 mg of initiator ammonium persulfate and stir for 30 min, and finally add 300 μl of butyl acrylate (BA), stir magnetically for 20 min at a speed of 500 rpm, and mix well to obtain solution B ;

[0042] 3. The solution B was ultrasonically defoamed for 5 minutes, then poured into a glass mold (100mm*100mm*2mm), and reacted at 60°C for 6 hours to obta...

Embodiment 2

[0049] 1. Take 40ml of deionized water, add 5.0g of sodium dodecyl sulfate, and magnetically stir at 500 rpm for 25min at 25°C to obtain clear solution A;

[0050] 2. Add 1.75 ml of dodecyl methacrylate to solution A, stir magnetically at 500 rpm for 3 hours, then add 10 g of acrylic acid, stir magnetically at 500 rpm for 20 minutes until all dissolved, and then Add 90 mg of ammonium persulfate initiator and stir for 30 minutes, finally add 200 μl of butyl acrylate, stir magnetically for 15 minutes at a speed of 500 rpm, and mix well to obtain solution B;

[0051] 3. The solution B was ultrasonically defoamed for 5 minutes, then poured into a glass mold (100mm*100mm*2mm), and reacted at 60°C for 4h to obtain a hydrophobic association hydrogel with single-sided self-adhesion;

[0052] 4. Mix 500ml of 0.15mol / L ferric chloride aqueous solution and 500ml of 0.9mol / L citric acid aqueous solution to obtain solution C;

[0053] 5. The prepared hydrogel with self-adhesion on one sid...

Embodiment 3

[0056] 1. Take 40 ml of deionized water, add 4.0 g of sodium dodecyl sulfate, and magnetically stir at 500 rpm for 15 minutes at 25°C to obtain a clear solution A.

[0057] 2. Add 1.75ml of dodecyl methacrylate to solution A, stir magnetically at 500 rpm for 4 hours at 25°C, then add 10g of acrylic acid, magnetically stir at 500 rpm at 25°C Stir for 20 min until it is completely dissolved, then add 100 mg of potassium persulfate initiator, stir for 30 min, and finally add 100 μl of butyl acrylate, magnetically stir at 500 rpm for 15 min at 25°C, and mix well to obtain solution B;

[0058] 3. Ultrasonic defoaming of solution B for 5min, then poured into a glass mold (100mm*100mm*2mm), and reacted at 60°C for 8h to obtain a hydrophobic association hydrogel with single-sided self-adhesion;

[0059] 4. Mix 500ml of 0.2mol / L ferric chloride aqueous solution and 500ml of 1.2mol / L citric acid aqueous solution to obtain solution C;

[0060] 5. The prepared hydrogel with self-adhesion o...

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Abstract

The invention belongs to the technical field of hydrogel, and discloses a transparent conductive hydrogel with single-sided self-adhesion and a preparation method and application thereof. The method is to add anionic surfactant into deionized water, stir at 30-80 °C, then add long-chain alkyl methacrylate, stir at 10-40 °C, add acrylic magnetic stirring until it is completely dissolved, add The initiator and short-chain alkyl acrylate continue to be stirred and mixed evenly, the obtained solution is ultrasonically defoamed, poured into a glass mold, and reacted at 50-70 ° C to obtain a transparent hydrogel with single-sided self-adhesion; The hydrogel is completely immersed in a mixed solution of ferric chloride and citric acid, taken out and rinsed. The hydrogel has unique single-sided self-adhesion, high strength, large deformability, good electrical conductivity and transparency, which can be used as a strain sensor and has broad application prospects in the fields of electronic skin and smart wearable devices. .

Description

technical field [0001] The invention belongs to the technical field of hydrogels, and more particularly, relates to a transparent conductive hydrogel with single-sided self-adhesion and a preparation method and application thereof. Background technique [0002] Conductive hydrogel is a flexible conductive material with excellent biocompatibility. Its advantages such as high water content, flexible network structure and performance, and excellent electrical conductivity make it suitable for wearable devices, artificial skin, human The field of flexible electronic devices such as computer interaction systems and soft robots has very broad application prospects. As an important part of flexible electronic devices such as wearable devices, flexible sensors need to have adaptive strain performance, self-adhesion and self-healing properties in practical applications to ensure stable signal detection under repeated deformation. [0003] During human activity monitoring, if there i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08F220/18C08F220/06C08L33/08C08K3/16
CPCC08J3/075C08F220/1812C08F220/06C08F220/1804C08J2333/08C08K3/16
Inventor 董智贤曾润鹏金乐乐卢淑欣戚楚怡
Owner GUANGDONG UNIV OF TECH
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