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Preparation method of cellulose based conductive hydrogel

A conductive hydrogel, cellulose-based technology, applied in the field of preparation of conductive hydrogel, can solve the problems of insoluble, poor conductivity of conductive hydrogel, limited application of cellulose, etc., and achieve swelling and thermal stability. The effect of excellent performance, stable network structure and excellent swelling performance

Inactive Publication Date: 2017-03-22
SHAANXI YIPINDA PETROCHEM CO LTD
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AI Technical Summary

Problems solved by technology

Due to the strong intramolecular and intermolecular hydrogen bonds and close-packed crystal structure of cellulose, it is difficult to dissolve in common solvents, which limits the application of cellulose
[0003] Existing conductive hydrogels have poor conductivity, swelling and thermal stability cannot meet the requirements

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0014] A preparation method of cellulose-based conductive hydrogel, comprising the following steps:

[0015] (1) Preparation of pure microcrystalline cellulose hydrogel: Dissolve microcrystalline cellulose in 1-butyl-3-methylimidazole chloride, pass N 2 protection, and reacted at a constant temperature of 100°C for 12h, then added N,N-methylenebisacrylamide and benzoyl peroxide, and reacted for 24h in an oil bath at 80°C to obtain microcrystalline cellulose hydrogel, and the microcrystalline cellulose Take out the hydrogel, immerse in deionized water, stir magnetically, change the water every 12 hours, and stir for 60 hours to obtain pure microcrystalline cellulose hydrogel;

[0016] (2) Soak the pure microcrystalline cellulose hydrogel obtained in step (1) in FeCl with a concentration of 0.5mol / L 3 and sodium p-benzenesulfonate, soak for 24 hours, take it out and immerse the gel in 0.15 mol / L pyrrole aqueous solution, adjust the pH value of the solution between 6.0-6.5 with...

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Abstract

The invention discloses a preparation method of a cellulose based conductive hydrogel. The preparation method comprises the following steps: (1) dissolving microcrystalline cellulose (MCC) with 1-Butyl-3-methylimidazolium chloride, reacting in a N2 protective atmosphere, and adding N,N-methylenebisacrylamide and benzoyl peroxide to prepare a pure microcrystalline cellulose hydrogel; and (2) soaking the pure microcrystalline cellulose hydrogel obtained in the step (1) in a mixed solution of FeCl3 and sodium p-benzenesulfonate, and immersing in a pyrrole water solution to prepare the cellulose based conductive hydrogel. The cellulose based conductive hydrogel prepared by the method has the advantages of uniform stable network structure, excellent conductivity, swelling property and heat stability, favorable electric conductivity and favorable swelling property; and the equilibrium swelling rate can be up to about 500%.

Description

technical field [0001] The invention belongs to the field of preparation of conductive hydrogel, and in particular relates to a preparation method of cellulose-based conductive hydrogel. Background technique [0002] Conductive polymer hydrogel combines the unique properties of hydrogel and the excellent electrical and optical properties of conductive polymers. Under the premise of maintaining dimensional stability, it can have different conductivity ranges, so it can be used in biomedicine, tissue Engineering materials and biosensors and other fields. In recent years, natural polymers with good biocompatibility, non-toxicity, environmental friendliness, and more active groups have gradually become ideal materials for preparing conductive hydrogels. However, the mechanical properties of natural polymers are often poor. Cellulose has good biocompatibility and is biodegradable. Its molecular structure contains a large number of functional groups such as hydroxyl groups, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J3/075C08L51/02C08L79/04C08F251/02C08F222/38C08G73/06
CPCC08J9/28C08F251/02C08G73/0611C08J3/075C08J2201/0522C08J2351/02C08J2479/04C08L51/02C08L2201/08
Inventor 李长英
Owner SHAANXI YIPINDA PETROCHEM CO LTD
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