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A kind of wrinkled graphene oxide/latex flexible film and its preparation and application

A flexible thin film and graphene technology, applied in the direction of coating, etc., can solve the problems of slow recovery rate, long photoresponse time of photoactivated materials, poor stability, etc., achieve stable photodeformation performance, fast and safe preparation process, low cost The effect of surface energy

Active Publication Date: 2022-01-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a wrinkled graphene oxide / latex flexible film and its preparation method and application to overcome the defects of long photoresponse time, poor stability and slow recovery rate of photoactuated materials in the prior art

Method used

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  • A kind of wrinkled graphene oxide/latex flexible film and its preparation and application
  • A kind of wrinkled graphene oxide/latex flexible film and its preparation and application
  • A kind of wrinkled graphene oxide/latex flexible film and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) At room temperature, weigh 1g of graphite oxide prepared by the improved Hummers method, measure 100mL of distilled water, transfer the two to a 200mL reagent bottle, stir for 5 minutes and then perform ultrasonication for 4h to obtain a concentration of 10mg / mL of graphene oxide dispersion.

[0029] (2) After the latex film was treated with oxygen plasma for 10 minutes, a square of 6×6 cm was measured on it and cut with a manual guillotine. Fix the cut latex film with clips, and the stretching degree is 0%.

[0030] (3) Pour the graphene oxide dispersion on the petri dish, absorb the graphene oxide dispersion with a brush, and brush evenly on the latex film, then place it in an infrared lamp (20mW / m 2 ) to dry, each drying time is 50s, and after 6 times of drying, the graphene oxide / latex flexible deformable film is obtained. figure 2 It is the SEM photo of the graphite oxide side, from which we can see the wrinkled morphology of the graphene oxide coating.

...

Embodiment 2

[0033] According to the method of embodiment 1, except that the length and width of the square latex film of 6 × 6cm after plasma treatment in embodiment 1 are all stretched to 7.2cm and fixed with clips, all the other are the same as embodiment 1, take off the fixed film Clips, so that the film naturally stretches until it no longer changes, that is, a wrinkled graphene oxide / latex film with a stretching degree of 20%, image 3 It is the SEM photo of the graphite oxide side. It can be seen from the figure that the surface of the graphene oxide coating has more wrinkles and a greater degree of deformation. The deformation effect and recovery degree of the wrinkled graphene oxide / latex film prepared in this embodiment are basically the same as those of the sample in Example 1.

Embodiment 3

[0035] According to the method of embodiment 1, except that the length and width of the square latex film of 6 × 6cm after plasma treatment in embodiment 1 are all stretched to 9.0cm and fixed with clips, all the other are the same as embodiment 1, take off the fixed film Clips, so that the film naturally stretches until it does not change, that is, a wrinkled graphene oxide / latex film with a stretching degree of 50%, Figure 4 It is the SEM photo of the graphite oxide side, from which it can be seen that the mechanical deformation causes the graphene oxide coating to show periodic wrinkles. The deformation effect and recovery degree of the wrinkled graphene oxide / latex film prepared in this embodiment are basically the same as those of the sample in Example 1.

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Abstract

The invention relates to a wrinkled graphene oxide / latex flexible film and its preparation and application. The film is obtained by brushing the graphene oxide dispersion liquid on the pre-stretched latex film, drying and repeating the operation. The preparation method comprises: treating the latex film with oxygen plasma, then stretching to different degrees and fixing it; brushing the graphene oxide dispersion on the pre-stretched latex film, and then placing it under an infrared lamp to dry. The thin film has good photodeformability, and can respond quickly under infrared light, and the response is reversible.

Description

technical field [0001] The invention belongs to the field of light-activated materials and their preparation and application, in particular to a wrinkled graphene oxide / latex flexible film and its preparation method and application. Background technique [0002] Light energy is a kind of clean energy, which can be controlled remotely, accurately and instantly. With the development trend of "smartization" of human society and the strengthening of environmental protection awareness, light-responsive materials have become a research hotspot of smart materials. Chinese and American researchers have recently developed a new type of photoresponsive adhesive tape that can strongly bond hydrogels and body tissues. Through the action of ultraviolet light, the ferric ions coordinated with the suture polymer are reduced to ferrous ions, resulting in The suture network decrosslinks and becomes a solution again, allowing strong bonds to be effectively removed (Yang G, Kangling W, et.al.,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/06C08J7/12C08L21/02
CPCC08J7/06C08J7/123C08J2321/02
Inventor 李耀刚孙之彦时秋伟王宏志侯成义张青红
Owner DONGHUA UNIV
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