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

A cellulose-based temperature-sensitive conductive hydrogel and its preparation method and application

A temperature-sensitive, conductive hydrogel technology, which is applied in the field of fiber material preparation, can solve the problems of weakened stimulus responsiveness and weakened mechanical properties of hydrogels, and achieve excellent electrical conductivity, excellent mechanical properties, and unique thermal properties. The effect of responsiveness

Active Publication Date: 2020-08-18
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of filling usually leads to weakened mechanical properties of the hydrogel, and due to the strong interaction between the filler and the polymer matrix, the movement of the polymer chains is restricted and the stimuli responsiveness is weakened.

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
  • A cellulose-based temperature-sensitive conductive hydrogel and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a cellulose-based temperature-sensitive conductive hydrogel, the preparation method comprising the following steps:

[0030] (1) Weigh 15g of cellulose solution, add 1mL of 2wt% guar gum solution and 1mL of epichlorohydrin, stir at 30°C for 30 minutes, and then heat at 60°C for 30 minutes to obtain a cellulose-based hydrogel. Soak the cellulose-based hydrogel in excess glacial acetic acid for 12 hours, take out the above-mentioned cellulose-based hydrogel and soak it in a In the aqueous solution, the quality of NIPAAm, BIS and water in this aqueous solution is 0.10g, 0.006g and 4g respectively, pass through inert gas for 30 minutes, stand for 5 hours, add 0.12g of ammonium persulfate (APS) and continue to pass through nitrogen 10 minutes, react at 50°C for 8 hours. The gel formed by cross-linking was taken out, placed in a dialysis bag, immersed in deionized water, changed every 12 hours, and dialyzed for 6 days to remove impurity ions.

[003...

Embodiment 2

[0033] This embodiment provides a cellulose-based temperature-sensitive conductive hydrogel, the preparation method comprising the following steps:

[0034](1) Weigh 15g of cellulose solution, add 1mL of 2wt% guar gum solution and 1mL of epichlorohydrin, stir at 30°C for 30 minutes, and then heat at 60°C for 30 minutes to obtain a cellulose-based hydrogel. Soak the cellulose-based hydrogel in excess glacial acetic acid for 12 hours, take out the above-mentioned cellulose-based hydrogel and soak it in a In the aqueous solution, the quality of NIPAAm, BIS and water in this aqueous solution is 0.10g, 0.008g and 4g respectively, pass through inert gas for 30 minutes, stand for 5 hours, add 0.12g of ammonium persulfate (APS) and continue to pass through nitrogen 10 minutes, react at 50°C for 8 hours. The gel formed by cross-linking was taken out, placed in a dialysis bag, immersed in deionized water, changed every 12 hours, and dialyzed for 6 days to remove impurity ions.

[0035...

Embodiment 3

[0037] This embodiment provides a cellulose-based temperature-sensitive conductive hydrogel, the preparation method comprising the following steps:

[0038] (1) Weigh 15g of cellulose solution, add 1mL of 2wt% guar gum solution and 1mL of epichlorohydrin, stir at 30°C for 30 minutes, and then heat at 60°C for 30 minutes to obtain a cellulose-based hydrogel. Soak the cellulose-based hydrogel in excess glacial acetic acid for 12 hours, take out the above-mentioned cellulose-based hydrogel and soak it in a In the aqueous solution, the quality of NIPAAm, BIS and water in this aqueous solution is 0.10g, 0.008g and 4g respectively, pass through inert gas for 30 minutes, stand for 5 hours, add 0.12g of ammonium persulfate (APS) and continue to pass through nitrogen 10 minutes, react at 50°C for 8 hours. The gel formed by cross-linking was taken out, placed in a dialysis bag, immersed in deionized water, changed every 12 hours, and dialyzed for 6 days to remove impurity ions.

[003...

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
thicknessaaaaaaaaaa
compressive stressaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparation of fiber materials, and particularly relates to a cellulose-based temperature-sensitive conductive hydrogel, and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding a guar gum solution and epichlorohydrin into a cellulose solution to obtain a cellulose-based hydrogel, then addingthe cellulose-based hydrogel into a water solution containing N-isopropylacrylamide and N,N-methylene bisacrylamide, adding a persulfate to carry out a cross-linking reaction, and finally, dialyzing the hydrogel formed by the cross-linking to remove impurity ions; and (2) soaking the dialyzed hydrogel in an aniline water solution, then adding a persulfate, and carrying out a reaction under ice bath to obtain the cellulose-based temperature-sensitive conductive hydrogel. The hydrogel provided by the invention not only has unique thermal response performance, but also is endowed with excellent conductive property and excellent mechanical property. The hydrogel can be widely used in the fields of conductive materials, intelligent response materials, temperature sensors and the like.

Description

technical field [0001] The invention belongs to the technical field of fiber material preparation, and in particular relates to a cellulose-based temperature-sensitive conductive hydrogel and a preparation method and application thereof. Background technique [0002] With the gradual depletion of non-renewable resources such as coal, oil, and natural gas, and the increasingly serious environmental "white pollution" problem, science and technology have tended to study renewable, environmentally friendly and sustainable functional materials. Cellulose is a renewable resource with a wide range of sources. Due to its biocompatibility and biodegradability, it has broad application prospects in the field of materials, and has attracted more and more domestic and foreign researchers' attention. After the cellulose dissolves, the molecular chain exposes more hydroxyl active groups. According to the characteristics of the active groups, designing and synthesizing functional hydrogels...

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): C08J3/075C08L1/02C08L5/14C08L79/02C08G73/02C08F291/08C08F220/54C08F222/38
CPCC08F251/00C08F251/02C08G73/0266C08J3/075C08J2301/02C08J2405/14C08J2479/02C08F220/54
Inventor 杨飞何伟健冯郁成汤吕桥李艳丽
Owner SOUTH CHINA 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