Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Conductive nano composite hydrogel as well as preparation method and application thereof

A composite hydrogel and conductive nanotechnology, which is applied in applications, conductive materials dispersed in non-conductive inorganic materials, diagnostic recording/measurement, etc., can solve the problem of destroying the cross-linked network structure and electronic pathways, low sensitivity of electronic equipment, The small size of conductive nanoparticles can improve the conductivity, stress and temperature response sensitivity, realize multiple signal monitoring, and increase the phase transition temperature.

Pending Publication Date: 2022-07-29
TAIYUAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the hydrophobicity of traditional conductive nanoparticles, and due to the small particle size of conductive nanoparticles, they are easy to agglomerate and difficult to disperse, the conductive nanoparticles tend to aggregate and distribute unevenly in the hydrogel, which destroys the crosslinking. The network structure and electronic pathways lead to low sensitivity and poor electrical performance of electronic equipment, which limits the application of electronic equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive nano composite hydrogel as well as preparation method and application thereof
  • Conductive nano composite hydrogel as well as preparation method and application thereof
  • Conductive nano composite hydrogel as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] In the present invention, the preparation method of the tyrosine-modified polypyrrole preferably comprises the following steps:

[0036] (1) tyrosine, pyrrole, polyvinylpyrrolidone and water are mixed to obtain mixed solution;

[0037] (2) mixing the mixed solution obtained in the step (1) with a ferric chloride solution, and performing an oxidative polymerization reaction to obtain a tyrosine-modified polypyrrole.

[0038] In the present invention, tyrosine, pyrrole, polyvinylpyrrolidone and water are preferably mixed to obtain a mixed solution.

[0039] In the present invention, the ratio of the amount of tyrosine to pyrrole is preferably (1-4):(0.5-3), more preferably (1.5-3):(0.5-2), and most preferably 2:1. The present invention can effectively control the modification effect of tyrosine on polypyrrole by controlling the ratio of the amount of tyrosine to pyrrole within the above range, so that the tyrosine-modified polypyrrole has excellent conductivity and disp...

Embodiment 1

[0063] A conductive nano-composite hydrogel is composed of a hydrogel matrix and conductive nanoparticles uniformly dispersed in the hydrogel matrix; the hydrogel matrix is ​​a mixture of polyacrylic acid and poly-N-isopropylacrylamide; The conductive nanoparticles are tyrosine-modified polypyrrole (denoted as Tyr-PPy), and the mass of the conductive nanoparticles is 0.0625% of the total mass of the conductive nanocomposite hydrogel.

[0064] Wherein, the preparation method of tyrosine-modified polypyrrole (Tyr-PPy) is specifically the following steps:

[0065] (1) Mix 0.004 mol of tyrosine (Tyr), 0.002 mol of pyrrole (Py), 0.6 mg / mL of polyvinylpyrrolidone (PVP) and 80 mL of deionized water, and stir for 2 h to make it uniform to obtain a mixed solution ; Wherein, the ratio of the amount of tyrosine and pyrrole is 2:1, the concentration of tyrosine in the mixed solution is 0.05mmol / mL, and the concentration of pyrrole in the mixed solution is 0.025mmol / mL;

[0066] (2) The m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Sensitivityaaaaaaaaaa
Sensitivityaaaaaaaaaa
Login to View More

Abstract

The invention provides conductive nano composite hydrogel as well as a preparation method and application thereof, and belongs to the technical field of conductive polymer materials. The conductive nano composite hydrogel provided by the invention comprises a hydrogel matrix and conductive nano particles uniformly dispersed in the hydrogel matrix, the hydrogel matrix is a mixture of polyacrylic acid and poly (N-isopropylacrylamide); the conductive nano particles are tyrosine modified polypyrrole. The conductive nano-composite hydrogel provided by the invention has sensitive stress and temperature signal response capability and excellent conductivity, so that stress and temperature signals can be converted into electric signals for monitoring multiple signals.

Description

technical field [0001] The invention relates to the technical field of conductive polymer materials, in particular to a conductive nano-composite hydrogel and a preparation method and application thereof. Background technique [0002] The rapid development of smart electronic devices, among which stretchable and multifunctional flexible hydrogel sensors play an important role in meeting the demands of the escalating complexity and versatility of smart electronic devices. Flexible hydrogel electronic devices can well match human skin and convert human mechanical deformation or temperature changes into detectable electrical signals in real time, thereby realizing the monitoring of various physiological signals such as human motion, pulse vibration, or human body temperature. , thus attracting great attention in monitoring and healthcare management devices. Among them, electronic sensors integrated with conductive nanomaterials and smart elastic hydrogel substrates are ideal m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L33/24C08L79/04C08F220/54C08F220/06C08F222/38C08G73/06H01B1/20A61B5/0205A61B5/00
CPCC08L33/24C08F220/54C08G73/0611H01B1/20A61B5/02055A61B5/6813A61B5/6833C08L79/04C08F220/06C08F222/385Y02E60/13
Inventor 王艳芹廖静文王景辉张雪慧武晓刚郭媛刘付永余雯雯陈维毅郑强
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com