Unlock instant, AI-driven research and patent intelligence for your innovation.

Gelatin-based conductive hydrogel with high strength and high additional value as well as preparation method and application of gelatin-based conductive hydrogel

A conductive hydrogel, high value-added technology, applied in the field of hydrogels, can solve the problems of low hydrogel strength, high added value not being systematically reflected, etc., to achieve simple and easy operation and excellent self-healing performance. , the effect of excellent reuse performance

Pending Publication Date: 2022-05-06
SOUTH CHINA UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above disclosed patents or papers have produced a series of gelatin-based hydrogels with good performance, most of the obtained hydrogels have low strength and high added value has not been systematically reflected

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
  • Gelatin-based conductive hydrogel with high strength and high additional value as well as preparation method and application of gelatin-based conductive hydrogel
  • Gelatin-based conductive hydrogel with high strength and high additional value as well as preparation method and application of gelatin-based conductive hydrogel
  • Gelatin-based conductive hydrogel with high strength and high additional value as well as preparation method and application of gelatin-based conductive hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A preparation method of gelatin based conductive hydrogel with high strength and high added value comprises the following steps:

[0060] (1) Preparation of nano cellulose suspension: add 20g bleached coniferous wood pulp into 2000g water, fully dredge it with Wally beater without hanging heavy objects for 6min, add 0.32g 2,2,6,6-tetramethylpiperidine-1-oxy (tempo) and 2G NaBr, and add sodium hypochlorite solution under stirring state (the dosage of sodium hypochlorite is 1mmol / g cellulose, and the effective chlorine content in sodium hypochlorite solution is 194.3g / l), The pH value of the reaction was maintained at 10.0 by adding NaOH. After 1h of reaction, 40ml absolute ethanol was added to terminate the reaction to obtain the pretreated cellulose; Then the pretreated cellulose was subjected to nano grinding treatment, and the grinding gap was - 100 μ m. The grinding times were 10 times to obtain tempo-nfc (TNFC); Take 10g (absolutely dry) TNFC, add 15g sodium periodate...

Embodiment 2

[0064] A preparation method of gelatin based conductive hydrogel with high strength and high added value comprises the following steps:

[0065] (1) Preparation of nano cellulose suspension: add 20g bleached coniferous wood pulp into 2000g water, fully dredge it with Wally beater without hanging heavy objects for 6min, add 0.32g 2,2,6,6-tetramethylpiperidine-1-oxy (tempo) and 2G NaBr, and add sodium hypochlorite solution under stirring state (the dosage of sodium hypochlorite is 1mmol / g cellulose, and the effective chlorine content in sodium hypochlorite solution is 194.3g / l), The pH value of the reaction was maintained at 10.0 by adding NaOH. After 1h of reaction, 40ml absolute ethanol was added to terminate the reaction to obtain the pretreated cellulose; Then the pretreated cellulose was subjected to nano grinding treatment, and the grinding gap was - 100 μ m. The grinding times were 10 times to obtain tempo-nfc (TNFC); After stirring under the condition of avoiding light, 10...

Embodiment 3

[0068] A preparation method of gelatin based conductive hydrogel with high strength and high added value comprises the following steps:

[0069] (1) Preparation of nano cellulose suspension: add 20g bleached coniferous wood pulp into 2000g water, fully dredge it with Wally beater without hanging heavy objects for 6min, add 0.32g 2,2,6,6-tetramethylpiperidine-1-oxy (tempo) and 2G NaBr, and add sodium hypochlorite solution under stirring state (the dosage of sodium hypochlorite is 1mmol / g cellulose, and the effective chlorine content in sodium hypochlorite solution is 194.3g / l), The pH value of the reaction was maintained at 10.0 by adding NaOH. After 1h of reaction, 40ml absolute ethanol was added to terminate the reaction to obtain the pretreated cellulose; Then the pretreated cellulose was subjected to nano grinding treatment, and the grinding gap was - 100 μ m. The grinding times were 10 times to obtain tempo-nfc (TNFC); Take 10g (absolutely dry) TNFC, add 15g sodium periodate...

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
Tensile strengthaaaaaaaaaa
Young's modulusaaaaaaaaaa
Login to View More

Abstract

The invention discloses high-strength and high-added-value gelatin-based conductive hydrogel as well as a preparation method and application thereof. The method comprises the following steps: (1) carrying out chemical pretreatment on defibered bleached softwood pulp, and then carrying out nanocrystallization grinding treatment on pretreated cellulose to obtain a nanocellulose suspension; carrying out oxidation treatment on the nanocellulose suspension to obtain dialdehyde nanocellulose; (2) mixing the dialdehyde nanocellulose and gelatin, uniformly stirring at 45 + / -5 DEG C, and then solidifying at 4 DEG C to obtain hydrogel; and dipping the hydrogel in a metal solution to obtain the gelatin-based conductive hydrogel with high strength and high added value. The conductive hydrogel is prepared by adopting a two-step method, the defect of poor application performance of natural polymer hydrogel in the prior art is overcome, and the prepared hydrogel has high tensile property, compression resistance and conductivity and also has excellent self-healing performance and recycling performance.

Description

technical field [0001] The invention belongs to the technical field of hydrogels, in particular to a gelatin based conductive hydrogel with high strength and high added value and a preparation method and application thereof. Background technology [0002] With the continuous development of intelligent electronic devices, wearable strain sensors have attracted extensive attention in the fields of bioelectric interface, artificial tissue, wearable electronics and personal medical monitoring because of their excellent flexibility, lightweight and sensor characteristics. However, due to the correlation mechanism between cross-linked structure and performance, the preparation of sensors with high sensitivity, significant mechanical properties, excellent sensing stability, fast response and low detection limit is still in the development stage. Therefore, it is necessary to manufacture a series of excellent sensors with balanced structure and performance. Natural polymer hydrogel is a ...

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): C08J3/075C08J7/12C08L89/00C08L1/04C08B15/02
CPCC08J3/075C08J7/12C08B15/02C08J2389/00C08J2401/04Y02E60/13
Inventor 王斌付浩成李金鹏陈克复李军
Owner SOUTH CHINA UNIV OF TECH