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Transparent conductive hydrogel with single-sided self-adhesion and preparation method and application thereof

A transparent conductive and hydrogel technology, applied in the field of hydrogel, can solve the problems of inconvenient assembly operation and poor mechanical properties, and achieve the effects of strong safety, good transparency and good self-healing properties.

Active Publication Date: 2021-05-25
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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  • Transparent conductive hydrogel with single-sided self-adhesion and preparation method and application thereof
  • Transparent conductive hydrogel with single-sided self-adhesion and preparation method and application thereof
  • Transparent conductive hydrogel with single-sided self-adhesion and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] figure 1 The structural representation of the transparent conductive hydrogel with one-sided self-adhesiveness prepared for the present invention, the specific preparation process is as follows:

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

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

[0042] 3. Ultrasonically defoam solution B for 5 minutes, then pour it into a glass mold (100mm*100mm*2mm), and react at 60°C for 6 hours to obtain a hydrophobic association hydrogel with on...

Embodiment 2

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

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

[0051] 3. Ultrasonic defoaming solution B for 5 minutes, then poured into a glass mold (100mm*100mm*2mm), and reacted at 60°C for 4 hours to obtain a hydrophobic association hydrogel with one-sided self-adhesiveness;

[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 hydrophobi...

Embodiment 3

[0056] 1. Take 40ml of deionized water, add 4.0g of sodium lauryl sulfate, and stir magnetically 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 at 25°C for 4 hours, then add 10g of acrylic acid, magnetically stir at 500 rpm at 25°C Stir for 20 minutes until completely dissolved, then add 100 mg of initiator potassium persulfate and stir for 30 minutes, finally add 100 μl of butyl acrylate, stir magnetically at 25°C at a speed of 500 rpm for 15 minutes, and mix well to obtain solution B;

[0058] 3. Ultrasonically defoam solution B for 5 minutes, then pour it into a glass mold (100mm*100mm*2mm), and react at 60°C for 8 hours to obtain a hydrophobic association hydrogel with one-sided self-adhesiveness;

[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 hydropho...

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Abstract

The invention belongs to the technical field of hydrogel, and discloses transparent conductive hydrogel with single-sided self-adhesion as well as a preparation method and application thereof. The method comprises the following steps: adding an anionic surfactant into deionized water, conducting stirring at 30-80 DEG C, then adding methacrylic acid long-chain alkyl ester, conducting stirring at 10-40 DEG C, then adding acrylic acid, conducting magnetic stirring until the acrylic acid is completely dissolved, adding an initiator and acrylic acid short-chain alkyl ester, continuing stirring to realize uniform mixing, carrying out ultrasonic defoaming on an obtained solution, pouring the solution into a glass mold, carrying out reacting at a temperature of 50 to 70 DEG C to obtain the transparent hydrogel with single-sided self-adhesion, completely soaking the hydrogel in a mixed solution of ferric chloride and citric acid, taking out the hydrogel and washing the hydrogel. The hydrogel has unique single-sided self-adhesion, high strength, large deformability and good conductivity and transparency, can be used as a strain sensor, and has wide application prospects in the fields of electronic skin, intelligent wearable equipment and the like.

Description

technical field [0001] The invention belongs to the field of hydrogel technology, and more specifically relates to a transparent conductive hydrogel with one-sided self-adhesiveness, a preparation method and application thereof. Background technique [0002] Conductive hydrogel is a flexible conductive material with excellent biocompatibility. Its high water content, flexible network structure and performance, and excellent electrical conductivity make it suitable for wearable devices, artificial skin, and human body. The field of flexible electronic devices such as computer-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] In the process of human activity monitoring, if...

Claims

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Application Information

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Patent Type & Authority Applications(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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