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

Transparent ion-conductive cellulose hydrogel and its preparation method and application

A cellulose hydrogel, ionic conduction technology, applied in electromagnetic measurement devices, electric/magnetic solid deformation measurement, fluid pressure measurement using piezoelectric devices, etc. The effect of low requirements, wide and cheap raw material sources, and simple preparation process

Active Publication Date: 2021-10-22
WUHAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the traditional conductive hydrogels are composed of intrinsic conductive polymers and other hydrogel matrices, but due to the rigid chain structure of the conductive polymer itself, there are defects in its processability and stretchability.

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
  • Transparent ion-conductive cellulose hydrogel and its preparation method and application
  • Transparent ion-conductive cellulose hydrogel and its preparation method and application
  • Transparent ion-conductive cellulose hydrogel and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Set the molecular weight to 1.08×10 5 The cotton linter cellulose is dispersed in 1.88mol / L benzyltrimethylammonium hydroxide aqueous solution, frozen at -24°C for 12 hours until the dispersion is completely frozen, then thawed at room temperature, centrifuged and defoamed to obtain a clear and transparent of cellulose solution. Add 0.4 mL of epichlorohydrin dropwise to 15 g of cellulose solution, stir in an ice-water bath to disperse the epichlorohydrin evenly in the cellulose solution, and mix the obtained epichlorohydrin / cellulose The mixed solution was degassed by centrifugation at 0 °C, and the obtained clear solution was spread on a glass plate by the continuous flow method. First put it in a windless environment at 20°C, put it in a coagulation bath of 1mol / L NaCl aqueous solution after 2 hours, and then put the coagulation bath in a refrigerator at 0°C for 24 hours, and the obtained cellulose ionized water coagulates The tensile strength of the adhesive is 2.5...

Embodiment 2

[0043] Set the molecular weight to 1.08×10 5The cotton linter cellulose is dispersed in 1.88mol / L benzyltrimethylammonium hydroxide aqueous solution, frozen at -24°C for 12 hours until the dispersion is completely frozen, then thawed at room temperature, centrifuged and defoamed to obtain a clear and transparent of cellulose solution. Add 0.4 mL of epichlorohydrin dropwise to 15 g of cellulose solution, stir in an ice-water bath to disperse the epichlorohydrin evenly in the cellulose solution, and mix the obtained epichlorohydrin / cellulose The mixed solution was degassed by centrifugation at 0 °C, and the obtained clear solution was spread on a glass plate by the continuous flow method. First put it in a windless environment at 20°C, put it in a coagulation bath of 3mol / L NaCl aqueous solution after 2 hours, and then put the coagulation bath in a refrigerator at 0°C for 24 hours, and the obtained cellulose ionized water coagulates The tensile strength of the glue is 5.2MPa, ...

Embodiment 3

[0045] Set the molecular weight to 1.08×10 5 The cotton linter cellulose is dispersed in 1.88mol / L benzyltrimethylammonium hydroxide aqueous solution, frozen at -24°C for 12 hours until the dispersion is completely frozen, then thawed at room temperature, centrifuged and defoamed to obtain a clear and transparent of cellulose solution. Add 0.5 mL of glycidyl ether dropwise to 15 g of cellulose solution, stir in an ice-water bath to disperse the glycidyl ether evenly in the cellulose solution, and after 20 min, place the obtained glycidyl ether / cellulose mixed solution in Centrifuge and defoam at 0°C, and the resulting clear solution is spread on a glass plate by the continuous flow method. First place it in a windless environment at 20°C, and then put it into a coagulation bath of 2.5mol / L NaCl / water / ethylene glycol solution after 2 hours, wherein the mass ratio of water to ethylene glycol is 60 Ratio of 40, then put the coagulation bath into the refrigerator at 0°C and let ...

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
tensile strengthaaaaaaaaaa
freezing pointaaaaaaaaaa
Freeze resistanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a transparent ion-conductive cellulose hydrogel, a preparation method and application thereof. In the present invention, the cellulose is uniformly dispersed in an aqueous solution of alkyl ammonium hydroxide, frozen at -24°C, thawed at room temperature after being completely frozen, and a transparent and uniform cellulose solution is obtained after centrifugation and defoaming. After stirring mechanically for 20 minutes, centrifuge and defoam, spread it on a glass plate or other smooth surface by casting method, put it into a series of electrolyte / water / organic solvent after cross-linking at room temperature, and let it stand at 0°C for 12 ~24h, a transparent ion-conducting cellulose hydrogel was obtained. The invention prepares the ion-conducting hydrogel by regenerating cellulose in the aqueous electrolyte solution, and the operation is simple and convenient. The obtained ion-conducting cellulose hydrogel has adjustable mechanical properties and electrical properties, and has very broad application prospects.

Description

technical field [0001] The invention relates to the field of natural polymer hydrogels, in particular to a transparent ion-conductive cellulose hydrogel and its preparation method and application. Background technique [0002] With the development of modern science and technology, the status of renewable resources and environment-friendly resources in scientific research is becoming more and more important. Plant cellulose, as the most abundant natural polymer in nature, has always been an important direction of scientific research due to its renewability, degradability, biocompatibility, non-toxicity and other properties. Therefore, plant cellulose has broad application prospects in water treatment, wearable devices, flexible electronic materials, tissue engineering materials, etc. [0003] At present, most of the traditional conductive hydrogels are composed of intrinsic conductive polymers and other hydrogel matrices, but due to the rigid chain structure of the conductiv...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08J3/24C08L1/02C08K5/1515C08K5/07C08K5/19G01B7/16G01L1/20G01L9/08
CPCC08J3/075C08J3/24C08J2301/02C08K5/07C08K5/1515C08K5/19C08K2201/014G01B7/16G01L1/20G01L9/08
Inventor 吕昂张猛秦超然钱心怡
Owner WUHAN UNIV
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