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Electrochromic nanometer cellulose composite material and method for preparing same

A technology of nanocellulose and composite materials, which is applied in the field of electrochromic nanocellulose composite materials and its preparation, can solve the problems of less research on flexible electrochromic materials, and achieves simple preparation method, low environmental pollution and application prospect. huge effect

Inactive Publication Date: 2016-12-14
郭云琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research on electrochromic materials is mostly focused on improving the performance of polyaniline, forming a double-layer structure with other polymers, etc., and there are few studies on flexible electrochromic materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An electrochromic nanocellulose composite material, comprising nanocellulose, polyethylene glycol and aniline, the solvent is N, N-dimethylacetamide, wherein, by mass ratio, nanocellulose: polyethylene glycol: aniline =84:3:13; the concentration of nanocellulose in the solvent is 0.5g / ml; the relative molecular weight of polyethylene glycol is 6000;

[0024] A preparation method of electrochromic nano-cellulose composite material, comprising the following steps:

[0025] (1) According to the above ratio, in a three-necked flask, dissolve nanocellulose, polyethylene glycol, aniline, in N,N-dimethylacetamide, and heat to 70°C in a water bath for 4 hours to obtain Mixed solution of nanocellulose;

[0026] (2) The mixed solution of nanocellulose is placed on the film-forming mold, and evaporated at 60°C under vacuum conditions to obtain a nanocellulose film; the thickness of the film is 10nm;

[0027] (3) in N 2 Under protection, place the nanocellulose film on the tray ...

Embodiment 2

[0030] An electrochromic nanocellulose composite material, comprising nanocellulose, polyethylene glycol and aniline, the solvent is N, N-dimethylacetamide, wherein, by mass ratio, nanocellulose: polyethylene glycol: aniline =87:3:10; the concentration of nanocellulose in the solvent is 1.0g / ml; the relative molecular weight of polyethylene glycol is 4000;

[0031] A preparation method of electrochromic nano-cellulose composite material, comprising the following steps:

[0032] (1) According to the above ratio, in a three-necked flask, dissolve nanocellulose, polyethylene glycol, aniline, in N,N-dimethylacetamide, and heat to 80°C in a water bath for 1 hour to obtain Mixed solution of nanocellulose;

[0033] (2) The mixed solution of nanocellulose is placed on a film-forming mold, and evaporated at 70°C under vacuum conditions to obtain a nanocellulose film; the film thickness is 50nm;

[0034] (3) Under the protection of Ar gas, place the nanocellulose film on the tray of t...

Embodiment 3

[0037] An electrochromic nanocellulose composite material, comprising nanocellulose, polyethylene glycol and aniline, the solvent is N, N-dimethylacetamide, wherein, by mass ratio, nanocellulose: polyethylene glycol: aniline =87:3:10; the concentration of nanocellulose in the solvent is 1.0g / ml; the relative molecular weight of polyethylene glycol is 4000;

[0038] A preparation method of electrochromic nano-cellulose composite material, comprising the following steps:

[0039] (1) According to the above ratio, in a three-necked flask, dissolve nanocellulose, polyethylene glycol, aniline, in N,N-dimethylacetamide, and heat to 80°C in a water bath for 1 hour to obtain Mixed solution of nanocellulose;

[0040] (2) The mixed solution of nanocellulose is placed on a film-forming mold, and evaporated at 70°C under vacuum conditions to obtain a nanocellulose film; the film thickness is 50nm;

[0041] (3) Under the protection of Ar gas, place the nanocellulose film on the tray of t...

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Abstract

The invention discloses an electrochromic nanometer cellulose composite material and a method for preparing the same, and belongs to the technical field of intelligent materials. The electrochromic nanometer cellulose composite material comprises nanometer celluloses, polyethylene glycol and aniline. N, N-dimethylacetamide is used as a solvent. The method includes steps of (1), dissolving raw materials in the solvent at the temperature of 70-80 DEG C for 1-4 h according to proportions to obtain mixed solution of the nanometer celluloses; (2), evaporating the mixed solution of the nanometer celluloses under a vacuum condition at the temperature of 60-70 DEG C to obtain nanometer cellulose films; (3), carrying out plasma radiation on the nanometer cellulose films under the protection of inert gas to obtain a polyaniline nanometer cellulose composite material; (4), soaking the polyaniline nanometer cellulose composite material in sulfuric acid and washing and drying the polyaniline nanometer cellulose composite material to obtain the electrochromic nanometer cellulose composite material. The electrochromic nanometer cellulose composite material and the method have the advantages that the method is simple, and the method and the electrochromic nanometer cellulose composite material are little in environmental pollution and have huge application prospects.

Description

technical field [0001] An electrochromic nano-cellulose composite material and a preparation method thereof of the present invention belong to the technical field of intelligent materials. Background technique [0002] Electrochromism refers to the phenomenon of color change caused by redox reaction of substances under electrochemical action. Electrochromism is widely used in smart windows, anti-glare rearview mirrors and display screens. Electrochromic devices have high requirements in terms of driving voltage and stability. [0003] Polyaniline is an electrochromic conjugated conductive polymer, which has been widely studied and applied due to the advantages of easy-to-obtain raw materials, simple synthesis process, and good environmental stability. It has many color changes and good cycle reversibility, and is considered to be the most promising electrochromic material. [0004] At present, the research on electrochromic materials is mostly focused on improving the perf...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08L71/02C08L79/02C08J7/14C08J7/12C08J5/18C08G73/02C09K9/02
CPCC08L1/02C08G73/0266C08J5/18C08J7/123C08J7/14C08J2301/02C08J2471/02C08L2203/16C08L2205/03C09K9/02C09K2211/1433C08L71/02C08L79/02
Inventor 郭云琴
Owner 郭云琴
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